Todd Lipcon created HDFS-3894:
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Summary: QJM: testRecoverAfterDoubleFailures can be flaky due to
IPC client caching
Key: HDFS-3894
URL: https://issues.apache.org/jira/browse/HDFS-3894
Project: Hadoop HDFS
Issue Type: Sub-task
Components: test
Affects Versions: QuorumJournalManager (HDFS-3077)
Reporter: Todd Lipcon
Assignee: Todd Lipcon
TestQJMWithFaults.testRecoverAfterDoubleFailures fails really occasionally.
Looking into it, the issue seems to be that it's possible by random chance for
an IPC server port to be reused between two different iterations of the test
loop. The client will then pick up and re-use the existing IPC connection to
the old server. However, the old server was shut down and restarted, so the old
IPC connection is stale (ie disconnected). This causes the new client to get an
EOF when it sends the "format()" call.
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