diff --git a/sdk/storage/Azure.Storage.Files.DataLake/api/Azure.Storage.Files.DataLake.netstandard2.0.cs b/sdk/storage/Azure.Storage.Files.DataLake/api/Azure.Storage.Files.DataLake.netstandard2.0.cs
index 3b30a1877b6c4..7346e6ed1b5c6 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/api/Azure.Storage.Files.DataLake.netstandard2.0.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/api/Azure.Storage.Files.DataLake.netstandard2.0.cs
@@ -312,6 +312,7 @@ public partial class DataLakeFileOpenWriteOptions
     {
         public DataLakeFileOpenWriteOptions() { }
         public long? BufferSize { get { throw null; } set { } }
+        public bool? Close { get { throw null; } set { } }
         public Azure.Storage.Files.DataLake.Models.DataLakeRequestConditions OpenConditions { get { throw null; } set { } }
         public System.IProgress<long> ProgressHandler { get { throw null; } set { } }
     }
@@ -324,7 +325,6 @@ public DataLakeFileUploadOptions() { }
         public System.Collections.Generic.IDictionary<string, string> Metadata { get { throw null; } set { } }
         public string Permissions { get { throw null; } set { } }
         public System.IProgress<long> ProgressHandler { get { throw null; } set { } }
-        public bool? RetainUncommittedData { get { throw null; } set { } }
         public Azure.Storage.StorageTransferOptions TransferOptions { get { throw null; } set { } }
         public string Umask { get { throw null; } set { } }
     }
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileClient.cs b/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileClient.cs
index 192016047540e..d675f8d6e322a 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileClient.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileClient.cs
@@ -4136,7 +4136,8 @@ private async Task<Stream> OpenWriteInternal(
                     bufferSize: options?.BufferSize ?? Constants.DefaultBufferSize,
                     position: position,
                     conditions: conditions,
-                    progressHandler: options?.ProgressHandler);
+                    progressHandler: options?.ProgressHandler,
+                    closeEvent: options?.Close);
             }
             catch (Exception ex)
             {
@@ -4196,7 +4197,7 @@ await client.AppendInternal(
                     // Flush data
                     return await client.FlushInternal(
                         position: newPosition,
-                        retainUncommittedData: args.RetainUncommittedData,
+                        retainUncommittedData: default,
                         close: args.Close,
                         args.HttpHeaders,
                         args.Conditions,
@@ -4223,7 +4224,7 @@ await client.AppendInternal(
 
                     return await client.FlushInternal(
                         offset + size,
-                        retainUncommittedData: args.RetainUncommittedData,
+                        retainUncommittedData: default,
                         close: args.Close,
                         httpHeaders: args.HttpHeaders,
                         conditions: args.Conditions,
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileWriteStream.cs b/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileWriteStream.cs
index ce947f7506c46..132ed2316e050 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileWriteStream.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/src/DataLakeFileWriteStream.cs
@@ -13,6 +13,7 @@ internal class DataLakeFileWriteStream : StorageWriteStream
     {
         private readonly DataLakeFileClient _fileClient;
         private readonly DataLakeRequestConditions _conditions;
+        private readonly bool? _closeEvent;
         private long _writeIndex;
 
         public DataLakeFileWriteStream(
@@ -20,7 +21,8 @@ public DataLakeFileWriteStream(
             long bufferSize,
             long position,
             DataLakeRequestConditions conditions,
-            IProgress<long> progressHandler) : base(
+            IProgress<long> progressHandler,
+            bool? closeEvent) : base(
                 position,
                 bufferSize,
                 progressHandler)
@@ -29,6 +31,7 @@ public DataLakeFileWriteStream(
             _fileClient = fileClient;
             _conditions = conditions ?? new DataLakeRequestConditions();
             _writeIndex = position;
+            _closeEvent = closeEvent;
         }
 
         protected override async Task AppendInternal(bool async, CancellationToken cancellationToken)
@@ -59,7 +62,7 @@ protected override async Task FlushInternal(bool async, CancellationToken cancel
             Response<PathInfo> response = await _fileClient.FlushInternal(
                 position: _writeIndex,
                 retainUncommittedData: default,
-                close: default,
+                close: _closeEvent,
                 httpHeaders: default,
                 conditions: _conditions,
                 async: async,
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileOpenWriteOptions.cs b/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileOpenWriteOptions.cs
index 8a073deefaf38..55d5adbdbfca1 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileOpenWriteOptions.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileOpenWriteOptions.cs
@@ -27,5 +27,17 @@ public class DataLakeFileOpenWriteOptions
         /// progress updates about data transfers.
         /// </summary>
         public IProgress<long> ProgressHandler { get; set; }
+
+        /// <summary>
+        /// Azure Storage Events allow applications to receive notifications when files change. When Azure Storage Events are enabled,
+        /// a file changed event is raised. This event has a property indicating whether this is the final change to distinguish the
+        /// difference between an intermediate flush to a file stream and the final close of a file stream. The close query parameter
+        /// is valid only when the action is "flush" and change notifications are enabled. If the value of close is "true" and the
+        /// flush operation completes successfully, the service raises a file change notification with a property indicating that
+        /// this is the final update (the file stream has been closed). If "false" a change notification is raised indicating the
+        /// file has changed. The default is false. This query parameter is set to true by the Hadoop ABFS driver to indicate that
+        /// the file stream has been closed.
+        /// </summary>
+        public bool? Close { get; set; }
     }
 }
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileUploadOptions.cs b/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileUploadOptions.cs
index 8cab05ec5677b..0bc0f6806b5ec 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileUploadOptions.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeFileUploadOptions.cs
@@ -50,14 +50,6 @@ public class DataLakeFileUploadOptions
         /// </summary>
         public IProgress<long> ProgressHandler { get; set; }
 
-        /// <summary>
-        /// If "true", uncommitted data is retained after the flush operation completes; otherwise, the uncommitted data is deleted
-        /// after the flush operation. The default is false. Data at offsets less than the specified position are written to the
-        /// file when flush succeeds, but this optional parameter allows data after the flush position to be retained for a future
-        /// flush operation.
-        /// </summary>
-        public bool? RetainUncommittedData { get; set; }
-
         /// <summary>
         /// Azure Storage Events allow applications to receive notifications when files change. When Azure Storage Events are enabled,
         /// a file changed event is raised. This event has a property indicating whether this is the final change to distinguish the
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/FileClientTests.cs b/sdk/storage/Azure.Storage.Files.DataLake/tests/FileClientTests.cs
index 6725275bbcef0..9e36c43fde46c 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/tests/FileClientTests.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/FileClientTests.cs
@@ -2878,7 +2878,7 @@ await file.UploadAsync(
         }
 
         [Test]
-        public async Task UploadAsync_CloseAndRetainData()
+        public async Task UploadAsync_Close()
         {
             // Arrange
             await using DisposingFileSystem test = await GetNewFileSystem();
@@ -2889,7 +2889,6 @@ public async Task UploadAsync_CloseAndRetainData()
             DataLakeFileUploadOptions options = new DataLakeFileUploadOptions
             {
                 Close = true,
-                RetainUncommittedData = true
             };
 
             // Act
@@ -4201,6 +4200,7 @@ await TestHelper.AssertExpectedExceptionAsync<RequestFailedException>(
                 openWriteStream.FlushAsync(),
                 e => Assert.AreEqual("ConditionNotMet", e.ErrorCode));
         }
+
         [Test]
         public async Task OpenWriteAsync_ProgressReporting()
         {
@@ -4337,5 +4337,30 @@ await file.OpenWriteAsync(
                     });
             }
         }
+
+        [Test]
+        public async Task OpenWriteAsync_Close()
+        {
+            // Arrange
+            await using DisposingFileSystem test = await GetNewFileSystem();
+            DataLakeFileClient file = InstrumentClient(test.FileSystem.GetFileClient(GetNewFileName()));
+            await file.CreateAsync();
+
+            byte[] data = GetRandomBuffer(Constants.KB);
+            using Stream stream = new MemoryStream(data);
+
+            DataLakeFileOpenWriteOptions options = new DataLakeFileOpenWriteOptions
+            {
+                Close = true,
+                BufferSize = 256
+            };
+
+            // Act
+            Stream openWriteStream = await file.OpenWriteAsync(
+                overwrite: false,
+                options);
+            await stream.CopyToAsync(openWriteStream);
+            await openWriteStream.FlushAsync();
+        }
     }
 }
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/OpenWriteAsync_Close.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/OpenWriteAsync_Close.json
new file mode 100644
index 0000000000000..cae1569db9eae
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/OpenWriteAsync_Close.json
@@ -0,0 +1,302 @@
+{
+  "Entries": [
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca?restype=container",
+      "RequestMethod": "PUT",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-caaf5cae593dd04daa4908bc328d5341-d291fa97aaf20c4d-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-blob-public-access": "container",
+        "x-ms-client-request-id": "33c73464-806e-71fe-15ca-ce11d67577c6",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:40 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:41 GMT",
+        "ETag": "\u00220x8D858EA41B8445D\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "33c73464-806e-71fe-15ca-ce11d67577c6",
+        "x-ms-request-id": "9d2cfe7b-501e-0046-5dd3-8a7927000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca/test-file-512bea34-b0b2-e382-0a59-ad0a341ce5e1?resource=file",
+      "RequestMethod": "PUT",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-e7eddb302d57dc488c16e9c39ea5349c-25fa248a1c78da45-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "5e075d92-6ffa-b469-b2e4-2815d2f33df8",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:41 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "ETag": "\u00220x8D858EA4225E0E9\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "5e075d92-6ffa-b469-b2e4-2815d2f33df8",
+        "x-ms-request-id": "64212629-001f-0064-35d3-8abc38000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca/test-file-512bea34-b0b2-e382-0a59-ad0a341ce5e1",
+      "RequestMethod": "HEAD",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-4cce66e154d8134587ee948239e5a345-c096672c04bc8a42-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "234ce03d-ac7b-3f05-1e94-343b027e798f",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:41 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 200,
+      "ResponseHeaders": {
+        "Accept-Ranges": "bytes",
+        "Content-Length": "0",
+        "Content-Type": "application/octet-stream",
+        "Date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "ETag": "\u00220x8D858EA4225E0E9\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-access-tier": "Hot",
+        "x-ms-access-tier-inferred": "true",
+        "x-ms-blob-type": "BlockBlob",
+        "x-ms-client-request-id": "234ce03d-ac7b-3f05-1e94-343b027e798f",
+        "x-ms-creation-time": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-lease-state": "available",
+        "x-ms-lease-status": "unlocked",
+        "x-ms-request-id": "9d2cfeb1-501e-0046-7bd3-8a7927000000",
+        "x-ms-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca/test-file-512bea34-b0b2-e382-0a59-ad0a341ce5e1?action=append\u0026position=0",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "02b214ad-544c-a39d-c729-0a4c409048ab",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": "5ezXxQrlFTiPYsySbj1Mk78zeNcVhufJp7bfy9NG9pHiSV\u002Bqn9RvrEfOz5ei10Z0l5VVnntm414FDR1UBUplSWs7sCTeovPrw8uPRrZPJ9BvajQ\u002B8FgWe2YApJG2G6b9aYYsZyYhlvWhatuv1p2ntuZN5JsVJ1gTJTS\u002B3f1hNKgkkd0wI7\u002BpTtQ\u002BnIZ8Z6XIWO6raDYL50EuGELxYrj3QDUzikTAd5Mmo5bG14vRlr2P9YUPtstxGaqbAgp9t\u002BsbRltRSd1gCOFbhMWgRBC2XIGEYmwz6IppwXCaJHWIqeuqq5AvgE3gL\u002ByjszEG0NSZ5aWI\u002BVV\u002B517R54dsxeRr0g==",
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "02b214ad-544c-a39d-c729-0a4c409048ab",
+        "x-ms-request-id": "6421262a-001f-0064-36d3-8abc38000000",
+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca/test-file-512bea34-b0b2-e382-0a59-ad0a341ce5e1?action=append\u0026position=256",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "ee8db611-76cb-fd42-70c8-84aa3ef12ed0",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": "2tn2mYCG3DSjMn\u002BPNVhi8ZwAP88AsJYrwzJdmMV0aQg34Fct2ToZXslTVSL/WCh5hZbPxKSb0ipCytVOKENvL8l3V1QBNRdh5\u002BEGrFtzLGsJ5BMvpKVkmw4s6g5kyzWF5CVZhwDUeE9\u002Bbt3DlSbPz55qREQwP4ojErtF1EoI/Bysgcc1GqRrNGzDsTbIoQboXRtw\u002BobwVKSbNXVEjqMEdXHAFhNemrT6/xDXbY5TW3G1XXcvmAKVuywjmeQvJ6XIvjvFB4rzicJmdvt2GecVR9kDjjEs1d1uK1vmOgDQytdqDq5TjlTnwtO0yCIHH6JFDVIKLJh0nOleVtwvDE/Clg==",
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "ee8db611-76cb-fd42-70c8-84aa3ef12ed0",
+        "x-ms-request-id": "6421262b-001f-0064-37d3-8abc38000000",
+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca/test-file-512bea34-b0b2-e382-0a59-ad0a341ce5e1?action=append\u0026position=512",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "893af22c-5a02-80df-048c-ca1a97d6b5b1",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": "qyMLCjjCuIUbzF14DLpnC7ihLa7Fnj/2csX1N3i4tYTxMnbjFJgMS5mFEMsWI9yj7tB2aiIT0QzjFZdzzYANYxbZhtlEg/YgleEVP45030/oUUmnQkti3WFpAP8AmH4YeKy0PZwCX2rZVdRA/pF\u002BbzVIins3ZSHLdqh42oP3H/xi/Mfhv6Gy5fLezex2Id7Q65HJuA0D4BKL6cb0ioXn4jbY3gLJna\u002BTlqWJWZc0VFXKp\u002B/xLWfuXxy0Vdbbvlpt9uu2nkPcBk7iNiJoeod6VpRxKeKW9bTO6X7mFEfYuNhKG2KsfrUR7aChD/dEhuWUOf5BaZR41wA257XE9vIGCQ==",
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "893af22c-5a02-80df-048c-ca1a97d6b5b1",
+        "x-ms-request-id": "6421262c-001f-0064-38d3-8abc38000000",
+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca/test-file-512bea34-b0b2-e382-0a59-ad0a341ce5e1?action=append\u0026position=768",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "4b7d2e42-a4b6-18cd-041e-f5ef7d7ff9bd",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
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+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "4b7d2e42-a4b6-18cd-041e-f5ef7d7ff9bd",
+        "x-ms-request-id": "6421262d-001f-0064-39d3-8abc38000000",
+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca/test-file-512bea34-b0b2-e382-0a59-ad0a341ce5e1?action=flush\u0026position=1024\u0026close=true",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "0",
+        "If-Match": "\u00220x8D858EA4225E0E9\u0022",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "69d83720-6958-09fa-2435-32b30dab4b9c",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 200,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "ETag": "\u00220x8D858EA42787658\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "69d83720-6958-09fa-2435-32b30dab4b9c",
+        "x-ms-request-id": "6421262e-001f-0064-3ad3-8abc38000000",
+        "x-ms-request-server-encrypted": "false",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-9ec99348-5814-2e58-07fa-2dcfc6772eca?restype=container",
+      "RequestMethod": "DELETE",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-dd21b9930c49434aa6402b546ad8db9c-8873d839f175764a-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "46cec3b4-90a6-9f65-b3b8-7a5a1bd11bab",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "46cec3b4-90a6-9f65-b3b8-7a5a1bd11bab",
+        "x-ms-request-id": "9d2cfee3-501e-0046-16d3-8a7927000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    }
+  ],
+  "Variables": {
+    "RandomSeed": "1116691881",
+    "Storage_TestConfigHierarchicalNamespace": "NamespaceTenant\nseannsecanary\nU2FuaXRpemVk\nhttps://seannsecanary.blob.core.windows.net\nhttps://seannsecanary.file.core.windows.net\nhttps://seannsecanary.queue.core.windows.net\nhttps://seannsecanary.table.core.windows.net\n\n\n\n\nhttps://seannsecanary-secondary.blob.core.windows.net\nhttps://seannsecanary-secondary.file.core.windows.net\nhttps://seannsecanary-secondary.queue.core.windows.net\nhttps://seannsecanary-secondary.table.core.windows.net\n68390a19-a643-458b-b726-408abf67b4fc\nSanitized\n72f988bf-86f1-41af-91ab-2d7cd011db47\nhttps://login.microsoftonline.com/\nCloud\nBlobEndpoint=https://seannsecanary.blob.core.windows.net/;QueueEndpoint=https://seannsecanary.queue.core.windows.net/;FileEndpoint=https://seannsecanary.file.core.windows.net/;BlobSecondaryEndpoint=https://seannsecanary-secondary.blob.core.windows.net/;QueueSecondaryEndpoint=https://seannsecanary-secondary.queue.core.windows.net/;FileSecondaryEndpoint=https://seannsecanary-secondary.file.core.windows.net/;AccountName=seannsecanary;AccountKey=Sanitized\n"
+  }
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/OpenWriteAsync_CloseAsync.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/OpenWriteAsync_CloseAsync.json
new file mode 100644
index 0000000000000..454234167ecfb
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/OpenWriteAsync_CloseAsync.json
@@ -0,0 +1,302 @@
+{
+  "Entries": [
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-fd611178-f838-7070-cdc3-f190bee92956?restype=container",
+      "RequestMethod": "PUT",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-5aaa1eef0118fc479268518da2176b6c-2cced5edfc24a74c-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-blob-public-access": "container",
+        "x-ms-client-request-id": "3df6c4ae-248c-e69a-4036-c9455c28d65f",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:45 GMT",
+        "ETag": "\u00220x8D858EA43C62711\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:45 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "3df6c4ae-248c-e69a-4036-c9455c28d65f",
+        "x-ms-request-id": "c4a3c0ae-f01e-0002-5ed3-8af318000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-fd611178-f838-7070-cdc3-f190bee92956/test-file-2ae9ee6c-c586-6a2d-1fe0-4a648523fb63?resource=file",
+      "RequestMethod": "PUT",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-0686758109eee743ad86676b0b156b64-36944398d8c78b45-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "86df12fe-e781-e87f-978c-1eacd936601c",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:45 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "ETag": "\u00220x8D858EA44539318\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "86df12fe-e781-e87f-978c-1eacd936601c",
+        "x-ms-request-id": "ce2d81a5-e01f-0098-4cd3-8a6dc1000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-fd611178-f838-7070-cdc3-f190bee92956/test-file-2ae9ee6c-c586-6a2d-1fe0-4a648523fb63",
+      "RequestMethod": "HEAD",
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+        "Authorization": "Sanitized",
+        "traceparent": "00-cf719aab28eed4498c1cdeec625bc9fa-a6100f4f4ce6994b-00",
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+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "96ca59ba-bf7c-631f-8904-79802c5a0295",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:45 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 200,
+      "ResponseHeaders": {
+        "Accept-Ranges": "bytes",
+        "Content-Length": "0",
+        "Content-Type": "application/octet-stream",
+        "Date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "ETag": "\u00220x8D858EA44539318\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-access-tier": "Hot",
+        "x-ms-access-tier-inferred": "true",
+        "x-ms-blob-type": "BlockBlob",
+        "x-ms-client-request-id": "96ca59ba-bf7c-631f-8904-79802c5a0295",
+        "x-ms-creation-time": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "x-ms-lease-state": "available",
+        "x-ms-lease-status": "unlocked",
+        "x-ms-request-id": "c4a3c10b-f01e-0002-25d3-8af318000000",
+        "x-ms-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-fd611178-f838-7070-cdc3-f190bee92956/test-file-2ae9ee6c-c586-6a2d-1fe0-4a648523fb63?action=append\u0026position=0",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "ad6c4204-bf86-0715-a9c8-96af1c1a4ada",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:45 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
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+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
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+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
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+      "ResponseBody": []
+    },
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+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
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+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "e97b0977-55ee-990f-d055-45e197c4097b",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:45 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
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+      "StatusCode": 202,
+      "ResponseHeaders": {
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+        "Date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
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+        "x-ms-client-request-id": "e97b0977-55ee-990f-d055-45e197c4097b",
+        "x-ms-request-id": "ce2d81a7-e01f-0098-4ed3-8a6dc1000000",
+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-fd611178-f838-7070-cdc3-f190bee92956/test-file-2ae9ee6c-c586-6a2d-1fe0-4a648523fb63?action=append\u0026position=512",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
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+        "x-ms-client-request-id": "1338c70f-609f-e9eb-4c61-9aa62996f321",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
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+      "ResponseHeaders": {
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+        "Date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
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+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
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+      "ResponseBody": []
+    },
+    {
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+        "Content-Length": "256",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "d0d22cdd-f68c-94dc-6a66-015e86cd6b34",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:46 GMT",
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+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
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+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "0",
+        "If-Match": "\u00220x8D858EA44539318\u0022",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "fdc8a387-23c4-a494-a7b1-cfda6ab0cfc7",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:46 GMT",
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+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 200,
+      "ResponseHeaders": {
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+        "Date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "ETag": "\u00220x8D858EA44B1FF8B\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:47 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "fdc8a387-23c4-a494-a7b1-cfda6ab0cfc7",
+        "x-ms-request-id": "ce2d81aa-e01f-0098-51d3-8a6dc1000000",
+        "x-ms-request-server-encrypted": "false",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-fd611178-f838-7070-cdc3-f190bee92956?restype=container",
+      "RequestMethod": "DELETE",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-51958fdfa17aaf48a8265a70b68662ec-9e4d9708f250b74b-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "e3d6e10a-6e05-c96f-11a3-94e06ffc3908",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:47 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "e3d6e10a-6e05-c96f-11a3-94e06ffc3908",
+        "x-ms-request-id": "c4a3c14d-f01e-0002-62d3-8af318000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    }
+  ],
+  "Variables": {
+    "RandomSeed": "738291464",
+    "Storage_TestConfigHierarchicalNamespace": "NamespaceTenant\nseannsecanary\nU2FuaXRpemVk\nhttps://seannsecanary.blob.core.windows.net\nhttps://seannsecanary.file.core.windows.net\nhttps://seannsecanary.queue.core.windows.net\nhttps://seannsecanary.table.core.windows.net\n\n\n\n\nhttps://seannsecanary-secondary.blob.core.windows.net\nhttps://seannsecanary-secondary.file.core.windows.net\nhttps://seannsecanary-secondary.queue.core.windows.net\nhttps://seannsecanary-secondary.table.core.windows.net\n68390a19-a643-458b-b726-408abf67b4fc\nSanitized\n72f988bf-86f1-41af-91ab-2d7cd011db47\nhttps://login.microsoftonline.com/\nCloud\nBlobEndpoint=https://seannsecanary.blob.core.windows.net/;QueueEndpoint=https://seannsecanary.queue.core.windows.net/;FileEndpoint=https://seannsecanary.file.core.windows.net/;BlobSecondaryEndpoint=https://seannsecanary-secondary.blob.core.windows.net/;QueueSecondaryEndpoint=https://seannsecanary-secondary.queue.core.windows.net/;FileSecondaryEndpoint=https://seannsecanary-secondary.file.core.windows.net/;AccountName=seannsecanary;AccountKey=Sanitized\n"
+  }
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_Close.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_Close.json
new file mode 100644
index 0000000000000..b2fadc65d3ebe
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_Close.json
@@ -0,0 +1,210 @@
+{
+  "Entries": [
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-e9ca08fa-90c6-cbbe-b9ff-8cb4473692d5?restype=container",
+      "RequestMethod": "PUT",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-c751f9a9f51fd740ab3a435c5cf0dee8-0298b29e4ee51d49-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-blob-public-access": "container",
+        "x-ms-client-request-id": "3d41b23d-337f-c78c-9d04-8faa07f9707a",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:42 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "ETag": "\u00220x8D858EA42D23B73\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "3d41b23d-337f-c78c-9d04-8faa07f9707a",
+        "x-ms-request-id": "4248b6c0-601e-005d-2dd3-8a4724000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-e9ca08fa-90c6-cbbe-b9ff-8cb4473692d5/test-file-30ca7173-65d8-2281-8db9-df801aa3a47d?resource=file",
+      "RequestMethod": "PUT",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-965a307b0e17d742bda376724e97cf02-22f6ab36dd5f5543-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "1aee00d6-28b7-8e36-41d9-f9658b2a274c",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "ETag": "\u00220x8D858EA432DEF62\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "1aee00d6-28b7-8e36-41d9-f9658b2a274c",
+        "x-ms-request-id": "0e98b389-801f-008e-6cd3-8a9b16000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-e9ca08fa-90c6-cbbe-b9ff-8cb4473692d5/test-file-30ca7173-65d8-2281-8db9-df801aa3a47d?action=append\u0026position=0",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "1024",
+        "traceparent": "00-0c0d373c8062e449ba3f60644e8e4f28-0d88b6b4dfc0a74a-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "1681c9ad-1a14-92e7-3b13-5e0167cf84e2",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": "Lyx3lPVVVSMwqtmDSM8JENX8p7RwnofXMB6vxlMLrfpfEXrbgtuFHRynAC6M/dq\u002BsM\u002BrHfvvDZGkn2TWpo7PJPzeIzZULo35d4qYyZ5ZSzJD8BaEYI/\u002BbwTpNuN3rnaN19wxrdqkaoFCsaZwV0PzS1QxkrZ4S8Ns37MxavepgcgTCvLBJ51Yn4WUQa/pjhjB9uqPRhvAFYwYxM0mcgCKmC/dXU1RMSS22PMw4wkUg1GbcHQNGjutU/RlqGLPMiyFCql/CzDLcMTG2G0ojzKCBEF7igKLfX70MAlY64jB5qbGqtlglHch0ACvRkHNhMPC46QhVKcp\u002BYwqi9sncoQ8BPHHYeRYIXDJWroC3DY8JqtFlQfkoJL\u002BnbFMNQmc\u002Bl17ckJQBSPfasEzV/ntJx1W7mQv4d18V2NfycQzDOtnLWBdh2n07CGIZitGsEmYEXWT9UekbRh//hve8Dxeq13VzCqYj6CzYgJDp3qxNqcaxrdOnxakwsBH3YhOFfvkKbrNcOQfAIHV35NFYcWezch0xCqEEAtHMQppUbIXZUwGXn2/5MbC\u002B8Y2eMCCXmD6qA/A2lHRYBivhj7ata7OvnpGPwNH3\u002BkBschjTZdLxNKpb6ijV4v7NP5lEF6H6EUXaLpFPB9dssklviiIbRKBY8FsMEUGK2fuSwoF4s\u002BLesmCTOXdBYiyTL3efZhicsfr462cG7cAETxTVvAVWM/6mkRfBiEso104ueSIJ63OjNhCGf4i7l8Rgjuoiq6XnfTt5ONUAmymvkBPY2HTd\u002BmPhMoY0j7Q2KvkToPmgxmuoBzwm0PJeopsnFq\u002B0or9PgtRGQXkf8q1HQw4b7TovzsmocNF4tymxgo/rDbkEQUg5xB4lGoTySBROn03kQrWg9wflzHHt1svq1L7pNOU0QsGF4ijcCvQE9ei86hebzX/aShZxHrUWC\u002B0SOkXGCRNvWlyMHmBMhKxT4RZJcSz0Tsd\u002BzqqOgyRMr9Z7yhBuPuyVTY\u002B6z67fTcWp3X1ejNrAXet\u002BhzqooJc4f66KEPqcJaJp9CNdOX9Yn0Dk5KXm7eL7e2wk77eyLKz4gpAAVX0LDfebNNj3Y2SsJie5g7wxUVHLjpVOdzYqt4d2pHavGAoDmdbuC/jKBBfHuMlP\u002BGjwxzF\u002BdManvJbBcL1RQL7t/M3dtenlQwVYwUq9hv4smr8ehd0FcOMDnB0/7Js7uMNY2fv7skK/C4Pr5XN8KjXY1NY\u002BMvrhqEwq2hnMpVaqHQiHJK0CcSg8n3pZWUuvx3HnZxfFPYXIt3Fv0NhosqYtQYgqtMWI1qOtwZOAiE7AetKn5T5\u002BpR\u002BC/m17kmBP0\u002ByUK9fDRVJsHpC0V3wySC7ib1XFwM1ng==",
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "1681c9ad-1a14-92e7-3b13-5e0167cf84e2",
+        "x-ms-request-id": "0e98b38a-801f-008e-6dd3-8a9b16000000",
+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-e9ca08fa-90c6-cbbe-b9ff-8cb4473692d5/test-file-30ca7173-65d8-2281-8db9-df801aa3a47d?action=flush\u0026position=1024\u0026close=true",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "0",
+        "traceparent": "00-5cb6d0de4cf27042bdec7d6f8ade4bf1-f3056a589160c742-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "c2b7b069-10a8-6238-ca61-b057176ee776",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 200,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "ETag": "\u00220x8D858EA43437AC5\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "c2b7b069-10a8-6238-ca61-b057176ee776",
+        "x-ms-request-id": "0e98b38b-801f-008e-6ed3-8a9b16000000",
+        "x-ms-request-server-encrypted": "false",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-e9ca08fa-90c6-cbbe-b9ff-8cb4473692d5/test-file-30ca7173-65d8-2281-8db9-df801aa3a47d",
+      "RequestMethod": "GET",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-4f12a3d43503704e88c70d4c84c960b6-8b76e309b686464d-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "b6974bbe-c217-3f39-32bb-341c3e304922",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:43 GMT",
+        "x-ms-range": "bytes=0-268435455",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 206,
+      "ResponseHeaders": {
+        "Accept-Ranges": "bytes",
+        "Content-Length": "1024",
+        "Content-Range": "bytes 0-1023/1024",
+        "Content-Type": "application/octet-stream",
+        "Date": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "ETag": "\u00220x8D858EA43437AC5\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-blob-type": "BlockBlob",
+        "x-ms-client-request-id": "b6974bbe-c217-3f39-32bb-341c3e304922",
+        "x-ms-creation-time": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "x-ms-lease-state": "available",
+        "x-ms-lease-status": "unlocked",
+        "x-ms-request-id": "4248b774-601e-005d-17d3-8a4724000000",
+        "x-ms-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": "Lyx3lPVVVSMwqtmDSM8JENX8p7RwnofXMB6vxlMLrfpfEXrbgtuFHRynAC6M/dq\u002BsM\u002BrHfvvDZGkn2TWpo7PJPzeIzZULo35d4qYyZ5ZSzJD8BaEYI/\u002BbwTpNuN3rnaN19wxrdqkaoFCsaZwV0PzS1QxkrZ4S8Ns37MxavepgcgTCvLBJ51Yn4WUQa/pjhjB9uqPRhvAFYwYxM0mcgCKmC/dXU1RMSS22PMw4wkUg1GbcHQNGjutU/RlqGLPMiyFCql/CzDLcMTG2G0ojzKCBEF7igKLfX70MAlY64jB5qbGqtlglHch0ACvRkHNhMPC46QhVKcp\u002BYwqi9sncoQ8BPHHYeRYIXDJWroC3DY8JqtFlQfkoJL\u002BnbFMNQmc\u002Bl17ckJQBSPfasEzV/ntJx1W7mQv4d18V2NfycQzDOtnLWBdh2n07CGIZitGsEmYEXWT9UekbRh//hve8Dxeq13VzCqYj6CzYgJDp3qxNqcaxrdOnxakwsBH3YhOFfvkKbrNcOQfAIHV35NFYcWezch0xCqEEAtHMQppUbIXZUwGXn2/5MbC\u002B8Y2eMCCXmD6qA/A2lHRYBivhj7ata7OvnpGPwNH3\u002BkBschjTZdLxNKpb6ijV4v7NP5lEF6H6EUXaLpFPB9dssklviiIbRKBY8FsMEUGK2fuSwoF4s\u002BLesmCTOXdBYiyTL3efZhicsfr462cG7cAETxTVvAVWM/6mkRfBiEso104ueSIJ63OjNhCGf4i7l8Rgjuoiq6XnfTt5ONUAmymvkBPY2HTd\u002BmPhMoY0j7Q2KvkToPmgxmuoBzwm0PJeopsnFq\u002B0or9PgtRGQXkf8q1HQw4b7TovzsmocNF4tymxgo/rDbkEQUg5xB4lGoTySBROn03kQrWg9wflzHHt1svq1L7pNOU0QsGF4ijcCvQE9ei86hebzX/aShZxHrUWC\u002B0SOkXGCRNvWlyMHmBMhKxT4RZJcSz0Tsd\u002BzqqOgyRMr9Z7yhBuPuyVTY\u002B6z67fTcWp3X1ejNrAXet\u002BhzqooJc4f66KEPqcJaJp9CNdOX9Yn0Dk5KXm7eL7e2wk77eyLKz4gpAAVX0LDfebNNj3Y2SsJie5g7wxUVHLjpVOdzYqt4d2pHavGAoDmdbuC/jKBBfHuMlP\u002BGjwxzF\u002BdManvJbBcL1RQL7t/M3dtenlQwVYwUq9hv4smr8ehd0FcOMDnB0/7Js7uMNY2fv7skK/C4Pr5XN8KjXY1NY\u002BMvrhqEwq2hnMpVaqHQiHJK0CcSg8n3pZWUuvx3HnZxfFPYXIt3Fv0NhosqYtQYgqtMWI1qOtwZOAiE7AetKn5T5\u002BpR\u002BC/m17kmBP0\u002ByUK9fDRVJsHpC0V3wySC7ib1XFwM1ng=="
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-e9ca08fa-90c6-cbbe-b9ff-8cb4473692d5?restype=container",
+      "RequestMethod": "DELETE",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-c0f61d8547127347894a206f05e18c1b-097a630efec94f48-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "cc99c633-30d6-ea5f-a854-9d553bad7e10",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:44 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "cc99c633-30d6-ea5f-a854-9d553bad7e10",
+        "x-ms-request-id": "4248b7a0-601e-005d-3dd3-8a4724000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    }
+  ],
+  "Variables": {
+    "RandomSeed": "1853894837",
+    "Storage_TestConfigHierarchicalNamespace": "NamespaceTenant\nseannsecanary\nU2FuaXRpemVk\nhttps://seannsecanary.blob.core.windows.net\nhttps://seannsecanary.file.core.windows.net\nhttps://seannsecanary.queue.core.windows.net\nhttps://seannsecanary.table.core.windows.net\n\n\n\n\nhttps://seannsecanary-secondary.blob.core.windows.net\nhttps://seannsecanary-secondary.file.core.windows.net\nhttps://seannsecanary-secondary.queue.core.windows.net\nhttps://seannsecanary-secondary.table.core.windows.net\n68390a19-a643-458b-b726-408abf67b4fc\nSanitized\n72f988bf-86f1-41af-91ab-2d7cd011db47\nhttps://login.microsoftonline.com/\nCloud\nBlobEndpoint=https://seannsecanary.blob.core.windows.net/;QueueEndpoint=https://seannsecanary.queue.core.windows.net/;FileEndpoint=https://seannsecanary.file.core.windows.net/;BlobSecondaryEndpoint=https://seannsecanary-secondary.blob.core.windows.net/;QueueSecondaryEndpoint=https://seannsecanary-secondary.queue.core.windows.net/;FileSecondaryEndpoint=https://seannsecanary-secondary.file.core.windows.net/;AccountName=seannsecanary;AccountKey=Sanitized\n"
+  }
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAndRetainData.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAndRetainData.json
deleted file mode 100644
index f4b1fe38acfdc..0000000000000
--- a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAndRetainData.json
+++ /dev/null
@@ -1,210 +0,0 @@
-{
-  "Entries": [
-    {
-      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-5f201bfb-6364-0ec2-5428-c60b1a409893?restype=container",
-      "RequestMethod": "PUT",
-      "RequestHeaders": {
-        "Authorization": "Sanitized",
-        "traceparent": "00-373b0b5b7090114bab665f27f84c0671-ba5da75fd3da8344-00",
-        "User-Agent": [
-          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200909.1",
-          "(.NET Core 4.6.29017.01; Microsoft Windows 10.0.18362 )"
-        ],
-        "x-ms-blob-public-access": "container",
-        "x-ms-client-request-id": "f9633d39-0f65-bd69-c5a3-7bde6e980f24",
-        "x-ms-date": "Thu, 10 Sep 2020 00:43:18 GMT",
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-        "Date": "Thu, 10 Sep 2020 00:43:20 GMT",
-        "ETag": "\u00220x8D8552283917719\u0022",
-        "Last-Modified": "Thu, 10 Sep 2020 00:43:19 GMT",
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-          "Microsoft-HTTPAPI/2.0"
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-          "Windows-Azure-HDFS/1.0",
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-        "x-ms-request-server-encrypted": "true",
-        "x-ms-version": "2019-12-12"
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-      "ResponseBody": []
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-    {
-      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-5f201bfb-6364-0ec2-5428-c60b1a409893/test-file-3262640f-b458-48b9-51b8-361557bdde2d?action=flush\u0026position=1024\u0026retainUncommittedData=true\u0026close=true",
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-        "x-ms-version": "2019-12-12"
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-      "ResponseHeaders": {
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-        "ETag": "\u00220x8D85522841E8BF6\u0022",
-        "Last-Modified": "Thu, 10 Sep 2020 00:43:20 GMT",
-        "Server": [
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-          "Microsoft-HTTPAPI/2.0"
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-        "x-ms-date": "Thu, 10 Sep 2020 00:43:19 GMT",
-        "x-ms-range": "bytes=0-268435455",
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-        "ETag": "\u00220x8D85522841E8BF6\u0022",
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-    },
-    {
-      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-5f201bfb-6364-0ec2-5428-c60b1a409893?restype=container",
-      "RequestMethod": "DELETE",
-      "RequestHeaders": {
-        "Authorization": "Sanitized",
-        "traceparent": "00-062d8411f046ec4c9559bf3a5fc2ef51-db3081cbc7100f46-00",
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-          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200909.1",
-          "(.NET Core 4.6.29017.01; Microsoft Windows 10.0.18362 )"
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-        "x-ms-client-request-id": "a10049b1-7da6-6aba-62ac-f68084f90e4e",
-        "x-ms-date": "Thu, 10 Sep 2020 00:43:19 GMT",
-        "x-ms-return-client-request-id": "true",
-        "x-ms-version": "2019-12-12"
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-      "ResponseHeaders": {
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-        "Date": "Thu, 10 Sep 2020 00:43:20 GMT",
-        "Server": [
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-        ],
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-        "x-ms-request-id": "273d8525-a01e-0052-3a0b-873148000000",
-        "x-ms-version": "2019-12-12"
-      },
-      "ResponseBody": []
-    }
-  ],
-  "Variables": {
-    "RandomSeed": "244692557",
-    "Storage_TestConfigHierarchicalNamespace": "NamespaceTenant\nseannsecanary\nU2FuaXRpemVk\nhttps://seannsecanary.blob.core.windows.net\nhttps://seannsecanary.file.core.windows.net\nhttps://seannsecanary.queue.core.windows.net\nhttps://seannsecanary.table.core.windows.net\n\n\n\n\nhttps://seannsecanary-secondary.blob.core.windows.net\nhttps://seannsecanary-secondary.file.core.windows.net\nhttps://seannsecanary-secondary.queue.core.windows.net\nhttps://seannsecanary-secondary.table.core.windows.net\n68390a19-a643-458b-b726-408abf67b4fc\nSanitized\n72f988bf-86f1-41af-91ab-2d7cd011db47\nhttps://login.microsoftonline.com/\nCloud\nBlobEndpoint=https://seannsecanary.blob.core.windows.net/;QueueEndpoint=https://seannsecanary.queue.core.windows.net/;FileEndpoint=https://seannsecanary.file.core.windows.net/;BlobSecondaryEndpoint=https://seannsecanary-secondary.blob.core.windows.net/;QueueSecondaryEndpoint=https://seannsecanary-secondary.queue.core.windows.net/;FileSecondaryEndpoint=https://seannsecanary-secondary.file.core.windows.net/;AccountName=seannsecanary;AccountKey=Sanitized\n"
-  }
-}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAndRetainDataAsync.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAndRetainDataAsync.json
deleted file mode 100644
index 419d1811cf8e8..0000000000000
--- a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAndRetainDataAsync.json
+++ /dev/null
@@ -1,210 +0,0 @@
-{
-  "Entries": [
-    {
-      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-90cb53a9-2493-ef7a-1818-ac8cd5d65a7f?restype=container",
-      "RequestMethod": "PUT",
-      "RequestHeaders": {
-        "Authorization": "Sanitized",
-        "traceparent": "00-2b05dcb1629ea14bb60946c4283dfa00-421da9e7002fa44b-00",
-        "User-Agent": [
-          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200909.1",
-          "(.NET Core 4.6.29017.01; Microsoft Windows 10.0.18362 )"
-        ],
-        "x-ms-blob-public-access": "container",
-        "x-ms-client-request-id": "0a0473e5-f93e-51ff-0a78-51e6d19d40c0",
-        "x-ms-date": "Thu, 10 Sep 2020 00:43:19 GMT",
-        "x-ms-return-client-request-id": "true",
-        "x-ms-version": "2019-12-12"
-      },
-      "RequestBody": null,
-      "StatusCode": 201,
-      "ResponseHeaders": {
-        "Content-Length": "0",
-        "Date": "Thu, 10 Sep 2020 00:43:21 GMT",
-        "ETag": "\u00220x8D85522848A91BC\u0022",
-        "Last-Modified": "Thu, 10 Sep 2020 00:43:21 GMT",
-        "Server": [
-          "Windows-Azure-Blob/1.0",
-          "Microsoft-HTTPAPI/2.0"
-        ],
-        "x-ms-client-request-id": "0a0473e5-f93e-51ff-0a78-51e6d19d40c0",
-        "x-ms-request-id": "2d0a73b3-701e-0051-1a0b-87d02c000000",
-        "x-ms-version": "2019-12-12"
-      },
-      "ResponseBody": []
-    },
-    {
-      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-90cb53a9-2493-ef7a-1818-ac8cd5d65a7f/test-file-06eaa4a9-b9fb-7ab0-17c2-84a99a77555a?resource=file",
-      "RequestMethod": "PUT",
-      "RequestHeaders": {
-        "Authorization": "Sanitized",
-        "traceparent": "00-6a0a5ebc6fd07740aaeedbf68376b6e0-517b83dcc7411d42-00",
-        "User-Agent": [
-          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200909.1",
-          "(.NET Core 4.6.29017.01; Microsoft Windows 10.0.18362 )"
-        ],
-        "x-ms-client-request-id": "e83e3cb4-4d86-3bd5-5adc-513e2e48e68b",
-        "x-ms-date": "Thu, 10 Sep 2020 00:43:20 GMT",
-        "x-ms-return-client-request-id": "true",
-        "x-ms-version": "2019-12-12"
-      },
-      "RequestBody": null,
-      "StatusCode": 201,
-      "ResponseHeaders": {
-        "Content-Length": "0",
-        "Date": "Thu, 10 Sep 2020 00:43:21 GMT",
-        "ETag": "\u00220x8D85522851CB390\u0022",
-        "Last-Modified": "Thu, 10 Sep 2020 00:43:22 GMT",
-        "Server": [
-          "Windows-Azure-HDFS/1.0",
-          "Microsoft-HTTPAPI/2.0"
-        ],
-        "x-ms-client-request-id": "e83e3cb4-4d86-3bd5-5adc-513e2e48e68b",
-        "x-ms-request-id": "8d65ceb6-101f-001a-3e0b-872c7f000000",
-        "x-ms-version": "2019-12-12"
-      },
-      "ResponseBody": []
-    },
-    {
-      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-90cb53a9-2493-ef7a-1818-ac8cd5d65a7f/test-file-06eaa4a9-b9fb-7ab0-17c2-84a99a77555a?action=append\u0026position=0",
-      "RequestMethod": "PATCH",
-      "RequestHeaders": {
-        "Authorization": "Sanitized",
-        "Content-Length": "1024",
-        "traceparent": "00-3f4b96b4afeb4447afc7d1190f197f90-c710ba955c5caf4e-00",
-        "User-Agent": [
-          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200909.1",
-          "(.NET Core 4.6.29017.01; Microsoft Windows 10.0.18362 )"
-        ],
-        "x-ms-client-request-id": "3bdfadf8-f875-eaec-efec-06664756a5a2",
-        "x-ms-date": "Thu, 10 Sep 2020 00:43:21 GMT",
-        "x-ms-return-client-request-id": "true",
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-          "(.NET Core 4.6.29017.01; Microsoft Windows 10.0.18362 )"
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-        "ETag": "\u00220x8D855228535065A\u0022",
-        "Last-Modified": "Thu, 10 Sep 2020 00:43:22 GMT",
-        "Server": [
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-        "Server": [
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-          "Microsoft-HTTPAPI/2.0"
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-      "RequestMethod": "DELETE",
-      "RequestHeaders": {
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-      "ResponseBody": []
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-    "Storage_TestConfigHierarchicalNamespace": "NamespaceTenant\nseannsecanary\nU2FuaXRpemVk\nhttps://seannsecanary.blob.core.windows.net\nhttps://seannsecanary.file.core.windows.net\nhttps://seannsecanary.queue.core.windows.net\nhttps://seannsecanary.table.core.windows.net\n\n\n\n\nhttps://seannsecanary-secondary.blob.core.windows.net\nhttps://seannsecanary-secondary.file.core.windows.net\nhttps://seannsecanary-secondary.queue.core.windows.net\nhttps://seannsecanary-secondary.table.core.windows.net\n68390a19-a643-458b-b726-408abf67b4fc\nSanitized\n72f988bf-86f1-41af-91ab-2d7cd011db47\nhttps://login.microsoftonline.com/\nCloud\nBlobEndpoint=https://seannsecanary.blob.core.windows.net/;QueueEndpoint=https://seannsecanary.queue.core.windows.net/;FileEndpoint=https://seannsecanary.file.core.windows.net/;BlobSecondaryEndpoint=https://seannsecanary-secondary.blob.core.windows.net/;QueueSecondaryEndpoint=https://seannsecanary-secondary.queue.core.windows.net/;FileSecondaryEndpoint=https://seannsecanary-secondary.file.core.windows.net/;AccountName=seannsecanary;AccountKey=Sanitized\n"
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\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAsync.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAsync.json
new file mode 100644
index 0000000000000..a9bca5d8d36bb
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileClientTests/UploadAsync_CloseAsync.json
@@ -0,0 +1,210 @@
+{
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+    {
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+      "RequestMethod": "PUT",
+      "RequestHeaders": {
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+        "traceparent": "00-672fd0eded270a40aaa8428ae2338608-0633ddb56133384c-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-blob-public-access": "container",
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+        "x-ms-date": "Mon, 14 Sep 2020 20:10:46 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
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+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "ETag": "\u00220x8D858EA451EDF45\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:47 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "ddc12af9-eab6-16fc-f3c6-eb2757085dda",
+        "x-ms-request-id": "71922606-501e-0069-18d3-8a74ec000000",
+        "x-ms-version": "2019-12-12"
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+      "RequestMethod": "PUT",
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+        "traceparent": "00-4bd4f194effac94ab72e43d9eec16924-c902233d58d1fa41-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
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+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 201,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "ETag": "\u00220x8D858EA466580CF\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "780ede9e-741b-3fda-b6fa-1b9c2294151f",
+        "x-ms-request-id": "d14d7f1c-f01f-0002-13d3-8af318000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
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+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "8c71758a-2fb1-9769-1dd7-91566226ca19",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:49 GMT",
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+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "8c71758a-2fb1-9769-1dd7-91566226ca19",
+        "x-ms-request-id": "d14d7f1d-f01f-0002-14d3-8af318000000",
+        "x-ms-request-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.dfs.core.windows.net/test-filesystem-6ba777ef-01fe-69bc-4761-6046567b962b/test-file-606d7309-da34-d946-b478-fdb2d9afdb48?action=flush\u0026position=1024\u0026close=true",
+      "RequestMethod": "PATCH",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "Content-Length": "0",
+        "traceparent": "00-a5530737f84b604ca9e0261a3a0eca73-fdb443ef0bac4a45-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "ad11bd67-8923-956d-773a-7a7ee1012720",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 200,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "ETag": "\u00220x8D858EA467BE2BA\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:50 GMT",
+        "Server": [
+          "Windows-Azure-HDFS/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "ad11bd67-8923-956d-773a-7a7ee1012720",
+        "x-ms-request-id": "d14d7f1e-f01f-0002-15d3-8af318000000",
+        "x-ms-request-server-encrypted": "false",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-6ba777ef-01fe-69bc-4761-6046567b962b/test-file-606d7309-da34-d946-b478-fdb2d9afdb48",
+      "RequestMethod": "GET",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-464c577c4acb6f44b7b186cca56e70d0-c6d8f30c0161bf46-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "a4ee3664-1d14-aef5-5ad5-8f913a104885",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "x-ms-range": "bytes=0-268435455",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 206,
+      "ResponseHeaders": {
+        "Accept-Ranges": "bytes",
+        "Content-Length": "1024",
+        "Content-Range": "bytes 0-1023/1024",
+        "Content-Type": "application/octet-stream",
+        "Date": "Mon, 14 Sep 2020 20:10:50 GMT",
+        "ETag": "\u00220x8D858EA467BE2BA\u0022",
+        "Last-Modified": "Mon, 14 Sep 2020 20:10:50 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-blob-type": "BlockBlob",
+        "x-ms-client-request-id": "a4ee3664-1d14-aef5-5ad5-8f913a104885",
+        "x-ms-creation-time": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "x-ms-lease-state": "available",
+        "x-ms-lease-status": "unlocked",
+        "x-ms-request-id": "719226a0-501e-0069-12d3-8a74ec000000",
+        "x-ms-server-encrypted": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": "ZtVNK7m4dURKJOALK5rXZO5OAxqSmlYf5OgpPexKPUTqosGBuzIgUP0oFRD5O60ZoJjEiqvAtst/LUbRjzdYAOacIIjZVqm7LrMdaoVGJak6D51ThrOYKez2Ao3rTsHGzxQpXRolQErvCFz4o0xGOQedln\u002BaBHozA/eb4lMb0N/xVppwHMiOFc5SZH5WoIWgsMmFTbhBK8ua9lojiV720zd9B02y1Rw/DoGwR5/83GNx\u002BzKKloInryrO1SVta4twW5FG2Zg47dqsRj82keMrnhr2sY0rbDy1VVci4//30aL2QOwOtgLKOQ1X3k9D8B5GojcKd7r\u002BRe9UkINBFQrbtXScQFH3HegYLHh/1I7tcmU520DI7Fro\u002BPr8uSV\u002BiCMDfCjbprDNToVP8kpCfnFhZx4eCDnJE8gZs0hW\u002BmTCmqNUe1dlEcu0a4y7ePkQpnmJm1EHX4DpOmlgwfNod1QgjVin7QIZ/FVSapysDprPCQ3OzF8SujoiakHuBU/YTPQ4muuhaLh3cJ/7tPXjPCvOkLjmmar0DdIdhILAK/YFeh6odHOvLaBUV1y/FwVFPi0WH3SX8bJJRIwZg\u002BQ1tkSo9TrWO8i3H2IXkUJONPbM2EVUqguCbohrXi/nlqq8HqAXFyHLbgNlXgARgGBw\u002Bw\u002BVTKqe4Aw5Joeyat2Y0Im4WnKhNh3UAGlC70wLce0o\u002B2IgUUn/Hj6U3vGaGQMlzI12WSbtzsTxwUtBXPG/LbSaiW96eH9AuDw0DVgsOudlHSO\u002BlBjGOi2eLpD9vsJM1LA8/4\u002BUqlQNNqDquMFrxYZk2z/NAZmc009B3EnvQvp65zio7zpY0XLPsF133IJsMmkJmOKDf9MWnyxAUs0KHvSmcNCIwtVLDArM/lA7JPbN1arg5akX92hkkk8OF36kxJJp0Wyx42\u002BTvozYtoCD2no1c30jKjlKj3hnIzCFPfSMJzq90lOKG/I6TCcdPkDo4bfU2KQBgZlZH0HzSb8\u002BDYCXTI5FxQgnq1eK6N4RLFA4f0J5sGVQiqagZLISltIy\u002Bz6nhfGyohuurSxMdpi7R/Pwu8l9xVwbR8HnpWFWFBWFWOyfaqZehd0mywM4AxQN5Ry/IdoItTbhiz4wyv26V5gXxx6rG91MkTXsVvpZ4kOt2r9ElvM6faK2vd5oLrvfbHNqIDz2Ysk\u002Bco\u002BlG147h6n6g/A9dcCl3Up79F7/5GN5DOqH78IHtnf2BiRjlWFDejU1bavLovayxELye21rP44sKw50tJjm8sx4R2\u002BcQUjoN3ooyXa3rmrz1St/FTsKi8aVN2lSz8adTnrfU1qHFYP6CUPzQnUXdH2kgd9tZt2QbbyoBwrelWizi3v72FoPa7\u002BohQ=="
+    },
+    {
+      "RequestUri": "https://seannsecanary.blob.core.windows.net/test-filesystem-6ba777ef-01fe-69bc-4761-6046567b962b?restype=container",
+      "RequestMethod": "DELETE",
+      "RequestHeaders": {
+        "Authorization": "Sanitized",
+        "traceparent": "00-a0e17c7d99d21745a7401fe69794212b-e11803def6cef14a-00",
+        "User-Agent": [
+          "azsdk-net-Storage.Files.DataLake/12.5.0-alpha.20200914.1",
+          "(.NET Core 4.6.29220.03; Microsoft Windows 10.0.19041 )"
+        ],
+        "x-ms-client-request-id": "ab1a1d30-8212-0a0b-d734-aa1afc009ad6",
+        "x-ms-date": "Mon, 14 Sep 2020 20:10:49 GMT",
+        "x-ms-return-client-request-id": "true",
+        "x-ms-version": "2019-12-12"
+      },
+      "RequestBody": null,
+      "StatusCode": 202,
+      "ResponseHeaders": {
+        "Content-Length": "0",
+        "Date": "Mon, 14 Sep 2020 20:10:50 GMT",
+        "Server": [
+          "Windows-Azure-Blob/1.0",
+          "Microsoft-HTTPAPI/2.0"
+        ],
+        "x-ms-client-request-id": "ab1a1d30-8212-0a0b-d734-aa1afc009ad6",
+        "x-ms-request-id": "719226b7-501e-0069-26d3-8a74ec000000",
+        "x-ms-version": "2019-12-12"
+      },
+      "ResponseBody": []
+    }
+  ],
+  "Variables": {
+    "RandomSeed": "1988782202",
+    "Storage_TestConfigHierarchicalNamespace": "NamespaceTenant\nseannsecanary\nU2FuaXRpemVk\nhttps://seannsecanary.blob.core.windows.net\nhttps://seannsecanary.file.core.windows.net\nhttps://seannsecanary.queue.core.windows.net\nhttps://seannsecanary.table.core.windows.net\n\n\n\n\nhttps://seannsecanary-secondary.blob.core.windows.net\nhttps://seannsecanary-secondary.file.core.windows.net\nhttps://seannsecanary-secondary.queue.core.windows.net\nhttps://seannsecanary-secondary.table.core.windows.net\n68390a19-a643-458b-b726-408abf67b4fc\nSanitized\n72f988bf-86f1-41af-91ab-2d7cd011db47\nhttps://login.microsoftonline.com/\nCloud\nBlobEndpoint=https://seannsecanary.blob.core.windows.net/;QueueEndpoint=https://seannsecanary.queue.core.windows.net/;FileEndpoint=https://seannsecanary.file.core.windows.net/;BlobSecondaryEndpoint=https://seannsecanary-secondary.blob.core.windows.net/;QueueSecondaryEndpoint=https://seannsecanary-secondary.queue.core.windows.net/;FileSecondaryEndpoint=https://seannsecanary-secondary.file.core.windows.net/;AccountName=seannsecanary;AccountKey=Sanitized\n"
+  }
+}
\ No newline at end of file