[jira] [Created] (KUDU-2109) TabletCopyClientSessionITest.TestCopyFromCrashedSource is flaky

["Adar Dembo (JIRA)" <ji...@apache.org>]

Adar Dembo created KUDU-2109:
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             Summary: TabletCopyClientSessionITest.TestCopyFromCrashedSource is flaky
                 Key: KUDU-2109
                 URL: https://issues.apache.org/jira/browse/KUDU-2109
             Project: Kudu
          Issue Type: Bug
          Components: tserver
    Affects Versions: 1.4.0
            Reporter: Adar Dembo
         Attachments: 0_tablet_copy_client_session-itest.txt

I've attached the full log from my test failure.

I think I've found the issue too: the test assumes that if it finds an on-disk superblock in the TOMBSTONED state, the failed tablet copy has finished and it's safe to start another one. However, in TSTabletManager::RunTabletCopy, 'tc_client' goes out of scope before 'deleter', which means that the TabletCopyClient destructor (which deletes the on-disk data, flushing the superblock in the TOMBSTONED state) will run before the TransitionInProgress destructor (which removes the tablet's ID from the global map tracking transitions, allowing a new tablet copy to proceed).



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