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https://issues.apache.org/jira/browse/MAPREDUCE-1778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12873575#action_12873575
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Hemanth Yamijala commented on MAPREDUCE-1778:
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bq. For #2, I think maybe we can try and create a dummy temp file. Is there a
better way than this? Did not find any helper api in FileSystem.
If you had the FileStatus for the directory, you could use FsPermission to
check this, no ? But if you don't have it, you'd need an additional RPC for the
same.
> CompletedJobStatusStore initialization should fail if
> {mapred.job.tracker.persist.jobstatus.dir} is unwritable
> --------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1778
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1778
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker
> Reporter: Amar Kamat
> Assignee: Amar Kamat
> Attachments: mapred-1778-1.patch, mapred-1778.patch
>
>
> If {mapred.job.tracker.persist.jobstatus.dir} points to an unwritable
> location or mkdir of {mapred.job.tracker.persist.jobstatus.dir} fails, then
> CompletedJobStatusStore silently ignores the failure and disables
> CompletedJobStatusStore. Ideally the JobTracker should bail out early
> indicating a misconfiguration.
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