tables_test.go:testSuite.TestShardRowIDBitsStep failed

[sre-bot]

tables_test.go:testSuite.TestShardRowIDBitsStep

[2020-06-29T11:49:25.693Z] ----------------------------------------------------------------------
[2020-06-29T11:49:25.693Z] FAIL: tables_test.go:399: testSuite.TestShardRowIDBitsStep
[2020-06-29T11:49:25.693Z]
[2020-06-29T11:49:25.693Z] tables_test.go:413:
[2020-06-29T11:49:25.693Z]     c.Assert(len(shards), Equals, 4)
[2020-06-29T11:49:25.693Z] ... obtained int = 3
[2020-06-29T11:49:25.693Z] ... expected int = 4
[2020-06-29T11:49:25.693Z]

Latest failed builds:
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_unit_test/41399/display/redirect
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_check_2/40387/display/redirect
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_unit_test/41395/display/redirect

[HunDunDM]

/label component/executor

[sre-bot]

New failed tests found:
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_unit_test/41462/display/redirect
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_unit_test/41542/display/redirect
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_unit_test/41520/display/redirect
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_unit_test/41535/display/redirect

[sre-bot]

New failed tests found:
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_unit_test/42687/display/redirect
https://internal.pingcap.net/idc-jenkins/job/tidb_ghpr_check_2/41666/display/redirect

[zhouqiang-cl]

happend again https://ci.pingcap.net/blue/organizations/jenkins/tidb-unit-test-nightly/detail/tidb-unit-test-nightly/3344/pipeline

[tiancaiamao]

This issue has been there for quite a long time.
After #30822, I guess it's solved.
Close for now, if it still reproduce, feel free to reopen.