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https://issues.apache.org/jira/browse/HDFS-2955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13209133#comment-13209133
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Hari Mankude commented on HDFS-2955:
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@Aaron,
We will end up reading from in_progress log for automatic failover to reduce
the failover times. This would be one less place to change when standby starts
reading from in_progress.
If you feel strongly, I can change patch to return 0 for now.
Regarding testing, any HA test will run into it. I have a 100% hit rate on the
actual cluster :-)
> HA: IllegalStateException during standby startup in getCurSegmentTxId
> ---------------------------------------------------------------------
>
> Key: HDFS-2955
> URL: https://issues.apache.org/jira/browse/HDFS-2955
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Hari Mankude
> Assignee: Hari Mankude
> Attachments: HDFS-2955-HDFS-1623.patch
>
>
> During standby restarts, a new routine getTransactionsSinceLastLogRoll() has
> been introduced for metrics which is calling getCurSegmentTxId().
> checkstate() in getCurSegmentTxId() assumes that log is opened for writing
> and this is not the case in standby.
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