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https://issues.apache.org/jira/browse/HDFS-1368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909601#action_12909601
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Hadoop QA commented on HDFS-1368:
---------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12453836/blockCounter.patch
against trunk revision 997157.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
-1 core tests. The patch failed core unit tests.
-1 contrib tests. The patch failed contrib unit tests.
+1 system tests framework. The patch passed system tests framework compile.
Test results:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h5.grid.sp2.yahoo.net/458/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h5.grid.sp2.yahoo.net/458/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h5.grid.sp2.yahoo.net/458/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h5.grid.sp2.yahoo.net/458/console
This message is automatically generated.
> Add a block counter to DatanodeDescriptor
> -----------------------------------------
>
> Key: HDFS-1368
> URL: https://issues.apache.org/jira/browse/HDFS-1368
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Fix For: 0.22.0
>
> Attachments: blockCounter.patch
>
>
> Many of time, we need to count the total number of blocks in a datanode by
> calling DatanodeDescriptor#numBlocks(). It has to traverse the block list to
> get the counter, which may not be trivial if there are millions of blocks.
> Adding a counter for each datanode does not cost much space but help save CPU
> processing time.
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