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https://issues.apache.org/jira/browse/HDFS-3024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13219162#comment-13219162
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Hudson commented on HDFS-3024:
------------------------------
Integrated in Hadoop-Hdfs-0.23-Build #183 (See
[https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/183/])
HDFS-3024. Improve performance of stringification in addStoredBlock.
Contributed by Todd Lipcon. (Revision 1294753)
Result = FAILURE
todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1294753
Files :
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/Block.java
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfoUnderConstruction.java
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
> Improve performance of stringification in addStoredBlock
> --------------------------------------------------------
>
> Key: HDFS-3024
> URL: https://issues.apache.org/jira/browse/HDFS-3024
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Minor
> Fix For: 0.24.0, 0.23.3
>
> Attachments: hdfs-3024.txt
>
>
> In looking at stack traces of a NN under a heavy block allocation load
> (around a thousand per second) I see that a lot of time is being taken up in
> stringification of log messages for addStoredBlock. This code can be
> optimized to use a single StringBuilder instead of a lot of nested toString()
> calls.
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