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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4657) Limit the number of blocks logged by the NN after a block report to a configurable value.
Date Tue, 16 Jul 2013 20:16:50 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13710174#comment-13710174
] 

Hudson commented on HDFS-4657:
------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #4093 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4093/])
HDFS-4657.  Limit the number of blocks logged by the NN after a block report to a configurable
value.  (Aaron Twinning Meyers via Colin Patrick McCabe) (cmccabe: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1503862)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java

                
> Limit the number of blocks logged by the NN after a block report to a configurable value.
> -----------------------------------------------------------------------------------------
>
>                 Key: HDFS-4657
>                 URL: https://issues.apache.org/jira/browse/HDFS-4657
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.0.4-alpha
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>             Fix For: 2.2.0
>
>         Attachments: HDFS-4657.patch
>
>
> If incremental BR is received before first full BR NN will log a line for every block
on a DN.
> This can impact restart times pretty substantially if the DNs have a lot of blocks, and
since the FSNS write lock is held while processing the block report clients will not make
any progress.

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