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https://issues.apache.org/jira/browse/HDFS-7213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14164238#comment-14164238
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Hadoop QA commented on HDFS-7213:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12673718/HDFS-7213.1412804753
against trunk revision 2217e2f.
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8355//console
This message is automatically generated.
> processIncrementalBlockReport performance degradation
> -----------------------------------------------------
>
> Key: HDFS-7213
> URL: https://issues.apache.org/jira/browse/HDFS-7213
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.4.0
> Reporter: Daryn Sharp
> Assignee: Eric Payne
> Priority: Critical
> Attachments: HDFS-7213.1412804753
>
>
> {{BlockManager#processIncrementalBlockReport}} has a debug line that is
> missing a {{isDebugEnabled}} check. The write lock is being held. Coupled
> with the increase in incremental block reports from receiving blocks, under
> heavy load this log line noticeably degrades performance.
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