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https://issues.apache.org/jira/browse/HDFS-3906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved HDFS-3906.
-------------------------------
Resolution: Fixed
Fix Version/s: QuorumJournalManager (HDFS-3077)
Hadoop Flags: Reviewed
Committed to branch, thanks
> QJM: quorum timeout on failover with large log segment
> ------------------------------------------------------
>
> Key: HDFS-3906
> URL: https://issues.apache.org/jira/browse/HDFS-3906
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: QuorumJournalManager (HDFS-3077)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Critical
> Fix For: QuorumJournalManager (HDFS-3077)
>
> Attachments: hdfs-3906.txt
>
>
> In doing some stress tests, I ran into an issue with failover if the current
> edit log segment written by the old active is large. With a 327MB log segment
> containing 6.4M transactions, the JN took ~11 seconds to read and validate it
> during the recovery step. This was longer than the 10 second timeout for
> createNewEpoch, which caused the recovery to fail.
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