Unstable test lightningServerSuite.TestGetDeleteTask

[zhouqiang-cl]

Bug Report

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[2021-09-06T03:00:00.583Z] lightning_test.go:361:

[2021-09-06T03:00:00.583Z]     c.Assert(getAllTasks(), DeepEquals, getAllResultType{

[2021-09-06T03:00:00.583Z]         Current: third,

[2021-09-06T03:00:00.583Z]         Queue:   []int64{},

[2021-09-06T03:00:00.583Z]     })

[2021-09-06T03:00:00.583Z] ... obtained lightning.getAllResultType = lightning.getAllResultType{Current:0, Queue:[]int64{}}

[2021-09-06T03:00:00.583Z] ... expected lightning.getAllResultType = lightning.getAllResultType{Current:1630897188966644757, Queue:[]int64{}}

1. Minimal reproduce step (Required)

in ci https://ci.pingcap.net/blue/organizations/jenkins/tidb-unit-test-nightly/detail/tidb-unit-test-nightly/10247/pipeline/123

2. What did you expect to see? (Required)

3. What did you see instead (Required)

4. What is your TiDB version? (Required)

[sleepymole]

/assign

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