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https://issues.apache.org/jira/browse/HDFS-3950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13458259#comment-13458259
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Todd Lipcon commented on HDFS-3950:
-----------------------------------
Actually I thought to grep the cluster fault injection test log output for
AssertionError and there is an edge case here due to the following:
bq. Adds a fault injection point between where a logger downloads a log segment
and then persists the metadata about that log segment. I had a hunch there
might be a bug here, but it is successfully passing the tests, so I think it
turned out to not be a problem. The new fault injection point uses the same
strategy as CheckpointFaultInjector.
So my hunch was right. Looking into how best to fix this super-rare edge case.
It's still worth reviewing this patch in the interim though
> QJM: misc TODO cleanup, improved log messages, etc
> --------------------------------------------------
>
> Key: HDFS-3950
> URL: https://issues.apache.org/jira/browse/HDFS-3950
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: QuorumJournalManager (HDFS-3077)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Minor
> Attachments: hdfs-3950.txt
>
>
> General JIRA for a bunch of miscellaneous clean-up in the QJM branch:
> - fix most remaining TODOs
> - improve some log/error messages
> - add some more sanity checks where appropriate
> - address any findbugs that might have crept into branch
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