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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2012/09/20 01:45:07 UTC

[jira] [Resolved] (HDFS-3956) QJM: purge temporary files when no longer within retention period

     [ https://issues.apache.org/jira/browse/HDFS-3956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon resolved HDFS-3956.
-------------------------------

       Resolution: Fixed
    Fix Version/s: QuorumJournalManager (HDFS-3077)
     Hadoop Flags: Reviewed

Committed to branch, thanks Eli.
                
> QJM: purge temporary files when no longer within retention period
> -----------------------------------------------------------------
>
>                 Key: HDFS-3956
>                 URL: https://issues.apache.org/jira/browse/HDFS-3956
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: QuorumJournalManager (HDFS-3077)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: QuorumJournalManager (HDFS-3077)
>
>         Attachments: hdfs-3956.txt
>
>
> After doing a bunch of fault testing, I noticed that the JNs had a bunch of temporary files left around in their journal directories which were no longer within the retention period. For example, if a JN crashes in the middle of recovery, it can leave around a file like {{edits_inprogress_123.epoch=10}}. These files are handy to keep around for forensics/debugging while they are still in their retention period, but we should not leave them forever. The normal purging policy should apply.

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