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From "Aaron T. Myers (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2866) Standby does not start up due to a gap in transaction id
Date Thu, 02 Feb 2012 02:03:54 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13198461#comment-13198461

Aaron T. Myers commented on HDFS-2866:

bq. I (we) are not convinced that having fsimage in a shared location is a bad idea. This
issue can happen with local edit dirs having a gap in txid with respect to shared edit dirs.

OK. Please let us know your reasoning.

bq. Please leave the jiras open until we get a chance to think this through.

Maybe we can close one as a dupe but not the other, since they're really the same underlying
issue? Or perhaps close them both but open a new one along the lines of "HA: Should we have
a shared directory with an fsimage?" I just don't want to have to one conversation split between
two JIRAs.
> Standby does not start up due to a gap in transaction id
> --------------------------------------------------------
>                 Key: HDFS-2866
>                 URL: https://issues.apache.org/jira/browse/HDFS-2866
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Hari Mankude
>            Priority: Critical
> Standby notices a gap in the transaction id in the shared.edits directory. The transactions
in dfs.edits.dir does not seem to have the gap. The gap happens during a failover.

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