Todd Lipcon created HDFS-3726:
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Summary: QJM: if a logger misses an RPC, don't retry that logger
until next segment
Key: HDFS-3726
URL: https://issues.apache.org/jira/browse/HDFS-3726
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ha
Affects Versions: QuorumJournalManager (HDFS-3077)
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Currently, if a logger misses an RPC in the middle of a log segment, or misses
the {{startLogSegment}} RPC (eg it was down or network was disconnected during
that time period), then it will throw an exception on every subsequent
{{journal()}} call in that segment, since it knows that it missed some edits in
the middle.
We should change this exception to a specific IOE subclass, and have the client
side of QJM detect the situation and stop sending IPCs until the next
{{startLogSegment}} call.
This isn't critical for correctness but will help reduce log spew on both sides.
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