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https://issues.apache.org/jira/browse/HADOOP-3970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629395#action_12629395
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Hadoop QA commented on HADOOP-3970:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12389722/HADOOP-3970-v4.1.patch
against trunk revision 693048.
+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 core tests. The patch failed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3213/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3213/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3213/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3213/console
This message is automatically generated.
> Counters written to the job history cannot be recovered back
> ------------------------------------------------------------
>
> Key: HADOOP-3970
> URL: https://issues.apache.org/jira/browse/HADOOP-3970
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Amar Kamat
> Assignee: Amar Kamat
> Attachments: HADOOP-3970-v1.patch, HADOOP-3970-v2.patch,
> HADOOP-3970-v3.patch, HADOOP-3970-v4.1.patch, HADOOP-3970-v4.patch
>
>
> Counters that are written to the JobHistory are stringified using
> {{Counters.makeCompactString()}}. The format in which this api converts the
> counter into a string is _groupname.countername:value_. The problem is that
> _groupname_ and _countername_ can contain a '.' and hence recovering the
> counter becomes difficult. Since JobHistory can be used for various purposes,
> reconstructing the counter object back might be useful. One such usecase is
> HADOOP-3245. There should be some way to recover the counter object back from
> its string representation and also to keep the string version readable.
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