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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13285) DecayRpcScheduler MXBean should only report decayed CallVolumeSummary
Date Thu, 16 Jun 2016 22:05:05 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiaoyu Yao updated HADOOP-13285:
--------------------------------
    Attachment: HADOOP-13285.00.patch

> 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
>         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" : "{\"hrt_qa\":[1,2]}"
> {code}



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