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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13285) DecayRpcScheduler MXBean should only report decayed CallVolumeSummary
Date Fri, 17 Jun 2016 22:58:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15337170#comment-15337170
] 

Hudson commented on HADOOP-13285:
---------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #9980 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/9980/])
HADOOP-13285. DecayRpcScheduler MXBean should only report decayed (xyao: rev 0761379fe45898c44c8f161834c298ef932e4d8c)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/DecayRpcScheduler.java
* hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestDecayRpcScheduler.java


> DecayRpcScheduler MXBean should only report decayed CallVolumeSummary
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-13285
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13285
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>            Reporter: Namit Maheshwari
>            Assignee: Xiaoyu Yao
>             Fix For: 2.8.0
>
>         Attachments: HADOOP-13285.00.patch
>
>
> HADOOP-13197 added non-decayed call metrics in metrics2 source for DecayedRpcScheduler.
However, CallVolumeSummary in MXBean was affected unexpectedly to include both decayed and
non-decayed call volume. The root cause is Jackson ObjectMapper simply serialize all the content
of the callCounts map which contains both non-decayed and decayed counter after HADOOP-13197.
This ticket is opened to fix the CallVolumeSummary in MXBean to include only decayed call
volume for backward compatibility and add unit test for DecayRpcScheduler MXBean to catch
this in future. 
> CallVolumeSummary JMX example before HADOOP-13197
> {code}
> "CallVolumeSummary" : "{\"hbase\":1,\"mapred\":1}"
> {code}
>  CallVolumeSummary JMX example after HADOOP-13197
> {code}
> "CallVolumeSummary" : "{\"user_x\":[1,2]}"
> {code}



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