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https://issues.apache.org/jira/browse/MAPREDUCE-1683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12866048#action_12866048
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Hadoop QA commented on MAPREDUCE-1683:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12444160/mr-1683-trunk-v1.patch
against trunk revision 942764.
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified
tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
+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 passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/179/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/179/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/179/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/179/console
This message is automatically generated.
> Remove JNI calls from ClusterStatus cstr
> ----------------------------------------
>
> Key: MAPREDUCE-1683
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1683
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 0.20.2
> Reporter: Chris Douglas
> Assignee: Luke Lu
> Fix For: 0.22.0
>
> Attachments: MAPREDUCE-1683_part2_yhadoop_20_10.patch,
> MAPREDUCE-1683_yhadoop_20_9.patch, MAPREDUCE-1683_yhadoop_20_S.patch,
> mr-1683-trunk-v1.patch
>
>
> The {{ClusterStatus}} constructor makes two JNI calls to the {{Runtime}} to
> fetch memory information. {{ClusterStatus}} instances are often created
> inside the {{JobTracker}} to obtain other, unrelated metrics (sometimes from
> schedulers' inner loops). Given that this information is related to the
> {{JobTracker}} process and not the cluster, the metrics are also available
> via {{JvmMetrics}}, and the jsps can gather this information for themselves:
> these fields can be removed from {{ClusterStatus}}
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