DM-119 is not stable

[lance6716]

Which jobs are flaking?

DM-119

Which test(s) are flaking?

DM-IT

Jenkins logs or GitHub Actions link

[2021-12-23T03:41:44.477Z] [Thu Dec 23 11:41:44 CST 2021] <<<<<< start DM-119 optimistic >>>>>>

[2021-12-23T03:41:44.477Z] dmctl test cmd: "start-task /home/jenkins/agent/workspace/dm_ghpr_integration_test/go/src/github.com/pingcap/tiflow/dm/tests/shardddl4/conf/double-source-optimistic.yaml --remove-meta"

[2021-12-23T03:41:46.366Z] dmctl test cmd: "query-status test"

[2021-12-23T03:41:46.366Z] got=1 expected=2

[2021-12-23T03:41:46.366Z] command: query-status test "unit": "Sync" count: 1 != expected: 2, failed the 0-th time, will retry again

[2021-12-23T03:41:48.257Z] got=2 expected=2

[2021-12-23T03:41:48.513Z] check diff successfully

[2021-12-23T03:41:48.513Z] ...

[2021-12-23T03:41:48.513Z] make: *** [dm_integration_test] Error 1

https://ci2.pingcap.net/blue/organizations/jenkins/dm_ghpr_integration_test/detail/dm_ghpr_integration_test/2027/pipeline

Anything else we need to know

• Does this test exist for other branches as well?

• Has there been a high frequency of failure lately?

[lance6716]

the test should be failed but it's passed indeed

[okJiang]

many times

https://ci2.pingcap.net/blue/organizations/jenkins/dm_ghpr_integration_test/detail/dm_ghpr_integration_test/2033/pipeline

[lance6716]

related to pingcap/tidb-tools#575

and we'll need finer check about task status