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https://issues.apache.org/jira/browse/HDFS-2772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183799#comment-13183799
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Aaron T. Myers commented on HDFS-2772:
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I'm still working on writing a test case for it, but I can confirm that the
present code will not in fact allow the standby to "silently fail to load all
the edits before becoming active." That is, the current code does not presently
have any correctness issue. Writing a test for this is a little annoying
because of the way exceptions are propagated, but I'll post a patch for it
shortly.
> HA: On transition to active, standby should not swallow ELIE
> ------------------------------------------------------------
>
> Key: HDFS-2772
> URL: https://issues.apache.org/jira/browse/HDFS-2772
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
>
> EditLogTailer#doTailEdits currently catches, logs, and swallows
> EditLogInputException. This is fine in the case when the standby is sitting
> idly behind tailing logs. However, when the standby is transitioning to
> active, swallowing this exception is incorrect, since it could cause the
> standby to silently fail to load all the edits before becoming active.
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