[jira] [Created] (HBASE-24493) [flakey test] TestExportSnapshot family of tests failing due to timeout in AbstractDelegationTokenSecretManager$ExpiredTokenRemover

["Nick Dimiduk (Jira)" <ji...@apache.org>]

Nick Dimiduk created HBASE-24493:
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             Summary: [flakey test] TestExportSnapshot family of tests failing due to timeout in AbstractDelegationTokenSecretManager$ExpiredTokenRemover
                 Key: HBASE-24493
                 URL: https://issues.apache.org/jira/browse/HBASE-24493
             Project: HBase
          Issue Type: Test
          Components: test
    Affects Versions: 2.3.0
            Reporter: Nick Dimiduk
         Attachments: TEST-org.apache.hadoop.hbase.snapshot.TestExportSnapshot.xml

I've observed another occurrence of this test timing out, over on https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1786/3/

The failure message is cryptic, but I think i found the issue. This isn't the {{HBaseClassTestRule}} invoking the timeout, it's something in the test, I think in the mini-cluster.

There appears to be a timeout set in some kind of secret manager, which is too aggressive for this mini-cluster test. The last component of the mini-cluster, MapReduce, is finally available at T+273501ms -- ~4.5 minutes after process launch. This is how I interpret the log line

{noformat}
2020-06-02 03:20:49,252 INFO  [Thread-223] server.Server(419): Started @273501ms
{noformat}

a scant 20ms later we get

{noformat}
2020-06-02 03:20:50,274 ERROR [Thread[Thread-224,5,FailOnTimeoutGroup]] delegation.AbstractDelegationTokenSecretManager$ExpiredTokenRemover(700): ExpiredTokenRemover received java.lang.InterruptedException: sleep interrupted
2020-06-02 03:20:50,351 INFO  [Time-limited test] hbase.HBaseTestingUtility(1272): Shutting down minicluster
{noformat}

These thread group names have no meaning to me.



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