diff --git a/x-pack/plugin/ml/log-config-creator/src/main/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreator.java b/x-pack/plugin/ml/log-config-creator/src/main/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreator.java
index a33d2d4e93388..92a4be3ab8bd2 100644
--- a/x-pack/plugin/ml/log-config-creator/src/main/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreator.java
+++ b/x-pack/plugin/ml/log-config-creator/src/main/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreator.java
@@ -24,6 +24,8 @@
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Comparator;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -155,10 +157,11 @@ protected void execute(Terminal terminal, OptionSet options) throws Exception {
             throw new UserException(ExitCodes.USAGE, "[" + file + "] does not exist or is not a file");
         }
 
+        ScheduledExecutorService scheduler = new ScheduledThreadPoolExecutor(1);
         try {
             LogConfigWriter logConfigWriter = new LogConfigWriter(terminal, filebeatModulePath,
                 file.toAbsolutePath().normalize().toString(), indexName, typeName, elasticsearchHost, logstashHost, timezone);
-            FileStructureFinderManager structureFinderManager = new FileStructureFinderManager();
+            FileStructureFinderManager structureFinderManager = new FileStructureFinderManager(scheduler);
             FileStructureFinder structureFinder = structureFinderManager.findFileStructure(sampleLines, Files.newInputStream(file));
             FileStructure structure = structureFinder.getStructure();
             for (String reason : structure.getExplanation()) {
@@ -167,6 +170,8 @@ protected void execute(Terminal terminal, OptionSet options) throws Exception {
             logConfigWriter.writeConfigs(structure, structureFinder.getSampleMessages(), outputDirectory);
         } catch (IllegalArgumentException | IOException e) {
             throw new UserException(ExitCodes.DATA_ERROR, "Cannot determine format of file [" + file + "]: " + e.getMessage());
+        } finally {
+            scheduler.shutdown();
         }
     }
 
diff --git a/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreatorTests.java b/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreatorTests.java
index 188bd92a746dd..2501089e28b25 100644
--- a/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreatorTests.java
+++ b/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigCreatorTests.java
@@ -7,6 +7,7 @@
 
 import org.elasticsearch.xpack.ml.filestructurefinder.FileStructureFinder;
 import org.elasticsearch.xpack.ml.filestructurefinder.FileStructureFinderManager;
+import org.junit.After;
 import org.junit.Before;
 
 import java.io.ByteArrayInputStream;
@@ -14,6 +15,8 @@
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
 
 public class LogConfigCreatorTests extends LogConfigCreatorTestCase {
 
@@ -30,16 +33,23 @@ public class LogConfigCreatorTests extends LogConfigCreatorTestCase {
     private static final String INDEX_MAPPINGS_CONSOLE = TEST_TYPE + "-index-mappings.console";
     private static final String INDEX_MAPPINGS_SH = TEST_TYPE + "-index-mappings.sh";
 
+    private ScheduledExecutorService scheduler;
     private FileStructureFinderManager structureFinderManager;
     private LogConfigWriter logConfigWriter;
 
     @Before
     public void setup() throws IOException {
-        structureFinderManager = new FileStructureFinderManager();
+        scheduler = new ScheduledThreadPoolExecutor(1);
+        structureFinderManager = new FileStructureFinderManager(scheduler);
         logConfigWriter = new LogConfigWriter(TEST_TERMINAL, null, TEST_FILE_NAME, TEST_INDEX_NAME, TEST_TYPE,
             randomFrom(POSSIBLE_HOSTNAMES), randomFrom(POSSIBLE_HOSTNAMES), "UTC");
     }
 
+    @After
+    public void shutdownScheduler() {
+        scheduler.shutdown();
+    }
+
     public void testFindLogFileFormatGivenJson() throws Exception {
         Path outputDirectory = createTempDir();
 
diff --git a/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigWriterTests.java b/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigWriterTests.java
index 50d245f667ae7..3c5089d741fb5 100644
--- a/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigWriterTests.java
+++ b/x-pack/plugin/ml/log-config-creator/src/test/java/org/elasticsearch/xpack/ml/configcreator/LogConfigWriterTests.java
@@ -8,6 +8,8 @@
 import org.elasticsearch.xpack.ml.filestructurefinder.FileStructureFinder;
 import org.elasticsearch.xpack.ml.filestructurefinder.FileStructureFinderManager;
 import org.elasticsearch.xpack.ml.filestructurefinder.FileStructureUtils;
+import org.junit.After;
+import org.junit.Before;
 
 import java.io.ByteArrayInputStream;
 import java.nio.charset.StandardCharsets;
@@ -15,13 +17,27 @@
 import java.util.LinkedHashMap;
 import java.util.Locale;
 import java.util.Map;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
 
 import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.not;
 
 public class LogConfigWriterTests extends LogConfigCreatorTestCase {
 
-    private FileStructureFinderManager structureFinderManager = new FileStructureFinderManager();
+    private ScheduledExecutorService scheduler;
+    private FileStructureFinderManager structureFinderManager;
+
+    @Before
+    public void setup() {
+        scheduler = new ScheduledThreadPoolExecutor(1);
+        structureFinderManager = new FileStructureFinderManager(scheduler);
+    }
+
+    @After
+    public void shutdownScheduler() {
+        scheduler.shutdown();
+    }
 
     public void testBestLogstashQuoteFor() {
         assertEquals("\"", LogConfigWriter.bestLogstashQuoteFor("normal"));