[HDFS-4925] TestQuorumJournalManager.testPurgeLogs intermittently Fails assertNoThreadsMatching

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 3.0.0-alpha1
• Component/s: qjm, test
• Assignee: Unassigned
• Reporter: Tao Luo
• Created: 21/Jun/13 18:34
• Updated: 02/Oct/19 17:12
• Resolved: 10/Feb/16 07:37

Description

On Jenkins, I saw this assert fail in the @After shutdown() for
TestQuorumJournalManager.testPurgeLogs():

    // Should not leak clients between tests -- this can cause flaky tests.
    // (See HDFS-4643)
    GenericTestUtils.assertNoThreadsMatching(".*IPC Client.*");

https://builds.apache.org/job/PreCommit-HDFS-Build/4546//testReport/

I could not reproduce locally.

Issue Links

• is broken by: HADOOP-12532 Data race in IPC client Client.stop()
• is duplicated by: HDFS-9347 Invariant assumption in TestQuorumJournalManager.shutdown() is wrong