[
https://issues.apache.org/jira/browse/HDFS-4075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13489006#comment-13489006
]
Tsz Wo (Nicholas), SZE commented on HDFS-4075:
----------------------------------------------
+1 the patch looks good. One minor comment: it is better to add a space after
"Invalidated".
{code}
+ LOG.info("Invalidated" + numOverReplicated + " over-replicated blocks on "
+
+ srcNode + " during recommissioning");
{code}
> Reduce recommissioning overhead
> -------------------------------
>
> Key: HDFS-4075
> URL: https://issues.apache.org/jira/browse/HDFS-4075
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.23.4, 2.0.2-alpha
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Priority: Critical
> Attachments: hdfs-4075.patch, hdfs-4075.patch
>
>
> When datanodes are recommissioned,
> {BlockManager#processOverReplicatedBlocksOnReCommission()} is called for each
> rejoined node and excess blocks are added to the invalidate list. The problem
> is this is done while the namesystem write lock is held.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
