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https://issues.apache.org/jira/browse/HBASE-18132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16029374#comment-16029374
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Hadoop QA commented on HBASE-18132:
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| {color:red}-1{color} | {color:red} docker {color} | {color:red} 6m 2s {color}
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| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12870386/HBASE-18132-branch-1.patch
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| JIRA Issue | HBASE-18132 |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/6995/console |
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This message was automatically generated.
> Low replication should be checked in period in case of datanode rolling
> upgrade
> -------------------------------------------------------------------------------
>
> Key: HBASE-18132
> URL: https://issues.apache.org/jira/browse/HBASE-18132
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.4.0, 1.1.10
> Reporter: Allan Yang
> Assignee: Allan Yang
> Attachments: HBASE-18132-branch-1.patch
>
>
> For now, we just check low replication of WALs when there is a sync operation
> (HBASE-2234), rolling the log if the replica of the WAL is less than
> configured. But if the WAL has very little writes or no writes at all, low
> replication will not be detected and thus no log will be rolled.
> That is a problem when rolling updating datanode, all replica of the WAL with
> no writes will be restarted and lead to the WAL file end up with a abnormal
> state. Later operation of opening this file will be always failed.
> I bring up a patch to check low replication of WALs at a configured period.
> When rolling updating datanodes, we just make sure the restart interval time
> between two nodes is bigger than the low replication check time, the WAL will
> be closed and rolled normally. A UT in the patch will show everything.
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