Chris Nauroth created HDFS-4748:
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Summary: MiniJournalCluster#restartJournalNode leaks resources,
which causes sporadic test failures
Key: HDFS-4748
URL: https://issues.apache.org/jira/browse/HDFS-4748
Project: Hadoop HDFS
Issue Type: Bug
Components: qjm, test
Reporter: Chris Nauroth
Assignee: Chris Nauroth
Fix For: 3.0.0
{{MiniJournalCluster#restartJournalNode}} stops a {{JournalNode}} and then
recreates a new one with the same configuration. However, it does not maintain
a reference to the new {{JournalNode}} instance, so therefore it doesn't get
stopped inside {{MiniJournalCluster#shutdown}}. The {{JournalNode}} holds a
file lock on its underlying storage, so this can cause sporadic failures in
tests like {{TestQuorumJournalManager}}.
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