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https://issues.apache.org/jira/browse/MAPREDUCE-901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13202039#comment-13202039
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Hudson commented on MAPREDUCE-901:
----------------------------------
Integrated in Hadoop-Mapreduce-0.23-Commit #514 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Commit/514/])
Merge -c 1241319 from trunk to branch-0.23 to fix MAPREDUCE-3697. Support
binary compatibility for Counters after MAPREDUCE-901.
acmurthy :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1241321
Files :
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Counter.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Counters.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/AbstractCounters.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/CounterGroupBase.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FileSystemCounterGroup.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FrameworkCounterGroup.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/GenericCounter.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestCounters.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestJobCounters.java
> Move Framework Counters into a TaskMetric structure
> ---------------------------------------------------
>
> Key: MAPREDUCE-901
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-901
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: task
> Affects Versions: 0.21.0
> Reporter: Owen O'Malley
> Assignee: Luke Lu
> Fix For: 0.23.0
>
> Attachments: 901_1.patch, 901_1.patch, FrameworkCounterGroup.java,
> MAPREDUCE-901.patch, MAPREDUCE-901.patch, MAPREDUCE-901.patch,
> MAPREDUCE-901.patch_2, mr-901-trunk-v1.patch
>
>
> I think we should move all of the Counters that the framework updates into a
> single class called TaskMetrics. TaskMetrics would have specific fields for
> each of the metrics like input records, input bytes, output records, etc.
> It would both reduce the serialized size of the heartbeats (by shrinking the
> Counters down to just the user's counters) and decrease the latency for
> updates to the JobTracker (since Counters are sent at most 1/minute instead
> of 1/heartbeat).
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