Leak in executor.(*slowQueryRetriever).parseSlowLog #27475
Description
Bug Report
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[2021-08-23T00:10:19.651Z] goleak: Errors on successful test run: found unexpected goroutines:
[2021-08-23T00:10:19.651Z] [Goroutine 15487 in state chan send, 2 minutes, with github.com/pingcap/tidb/executor.(*slowQueryRetriever).parseSlowLog on top of the stack:
[2021-08-23T00:10:19.651Z] goroutine 15487 [chan send, 2 minutes]:
[2021-08-23T00:10:19.651Z] github.com/pingcap/tidb/executor.(*slowQueryRetriever).parseSlowLog(0xc00e0c6180, 0x69e1c30, 0xc02379c000, 0x6a36898, 0xc01da5e400, 0xc0000dbf50, 0x40)
[2021-08-23T00:10:19.651Z] /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/executor/slow_query.go:436 +0x747
[2021-08-23T00:10:19.651Z] github.com/pingcap/tidb/executor.(*slowQueryRetriever).parseDataForSlowLog(0xc00e0c6180, 0x69e1c30, 0xc02379c000, 0x6a36898, 0xc01da5e400)
[2021-08-23T00:10:19.651Z] /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/executor/slow_query.go:192 +0xe6
[2021-08-23T00:10:19.651Z] created by github.com/pingcap/tidb/executor.(*slowQueryRetriever).initializeAsyncParsing
[2021-08-23T00:10:19.651Z] /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/executor/slow_query.go:1046 +0xc7
[2021-08-23T00:10:19.651Z] ]
[2021-08-23T00:10:20.219Z] FAIL github.com/pingcap/tidb/executor 212.830s