Todd Lipcon created HDFS-3795:
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Summary: 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
Attachments: 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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