Todd Lipcon created HDFS-3884:
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Summary: QJM: Journal format() should reset cached values
Key: HDFS-3884
URL: https://issues.apache.org/jira/browse/HDFS-3884
Project: Hadoop HDFS
Issue Type: Sub-task
Affects Versions: QuorumJournalManager (HDFS-3077)
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Fix For: QuorumJournalManager (HDFS-3077)
Attachments: hdfs-3884.txt
Simple bug in the JournalNode: it caches certain values (eg accepted epoch) in
memory, and the cached values aren't reset when the journal is formatted. So,
after a format, further calls to the same Journal will see the old value for
accepted epoch, writer epoch, etc, preventing the journal from being re-used
until the JN is restarted.
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