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https://issues.apache.org/jira/browse/HDFS-3800?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-3800:
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Attachment: hdfs-3800.txt
This patch applies on top of the following other staged patches:
pick fac7f15 HDFS-3796. Allow EditLogFileOutputStream to skip fsync() in tests
pick 5a18397 HDFS-3765. initializeSharedEdits
pick 85978e7 HDFS-3793. Implement format() for QJM
pick 4fc442e HDFS-3795. Validate journal dir at startup
pick f2da880 HDFS-3798. Avoid throwing NPE if finalizeLogSegment() is called on
an invalid segment
pick b0d1a3d HDFS-3799. deal with empty files in recovery path
pick d792847 HDFS-3797. Make journal() call take segmentTxId as parameter
The new randomized test requires a few more patches on top before it passes
reliably. However, I'd like to check it in and then get it passing reliably in
follow-up JIRAs.
> QJM: improvements to QJM fault testing
> --------------------------------------
>
> Key: HDFS-3800
> URL: https://issues.apache.org/jira/browse/HDFS-3800
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: QuorumJournalManager (HDFS-3077)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hdfs-3800.txt
>
>
> This JIRA improves TestQJMWithFaults as follows:
> - the current implementation didn't properly unwrap exceptions thrown by the
> reflection-based injection method. This caused some issues in the code where
> the injecting proxy didn't act quite like the original object.
> - the current implementation incorrectly assumed that the recovery process
> would recover to _exactly_ the last acked sequence number. In fact, it may
> recover to that transaction _or any greater transaction_.
> It also adds a new randomized test which uncovered a number of other bugs. I
> will defer to the included javadoc for a description of this test.
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