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https://issues.apache.org/jira/browse/HDFS-3795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved HDFS-3795.
-------------------------------
Resolution: Fixed
Fix Version/s: QuorumJournalManager (HDFS-3077)
Hadoop Flags: Reviewed
> QJM: validate journal dir at startup
> ------------------------------------
>
> Key: HDFS-3795
> URL: https://issues.apache.org/jira/browse/HDFS-3795
> 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-3795.txt, hdfs-3795.txt
>
>
> Currently, the JN does not validate the configured journal directory until it
> tries to write into it. This is counter-intuitive for users, since they would
> expect to find out about a misconfiguration at startup time, rather than on
> first access. Additionally, two testers accidentally configured the journal
> dir to be a URI, which the code accidentally understood as a relative path
> ({{CWD/file:/foo/bar}}.
> We should validate the config at startup to be an accessible absolute path.
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