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https://issues.apache.org/jira/browse/HDFS-2634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved HDFS-2634.
-------------------------------
Resolution: Fixed
Fix Version/s: HA branch (HDFS-1623)
Hadoop Flags: Reviewed
committed latest patch, thx for the reviews.
> Standby needs to ingest latest edit logs before transitioning to active`
> ------------------------------------------------------------------------
>
> Key: HDFS-2634
> URL: https://issues.apache.org/jira/browse/HDFS-2634
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Critical
> Fix For: HA branch (HDFS-1623)
>
> Attachments: hdfs-2634.txt, hdfs-2634.txt
>
>
> When the standby transitions to active state, it needs to _read_ the latest
> edit logs before it reopens them for write access. Currently, the transition
> calls {{stopStandbyServices}}, which stops the tailer, but doesn't read ahead
> to the very end. This ends up leaving the shared edits dir in an inconsistent
> state where we have overlapping transaction IDs.
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