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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12325) RPC Metrics : Add the ability track and log slow RPCs
Date Mon, 31 Oct 2016 18:44:58 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhe Zhang updated HADOOP-12325:
-------------------------------
       Resolution: Fixed
    Fix Version/s: 2.7.4
           Status: Resolved  (was: Patch Available)

I verified test failures and pushed to branch-2.7.

> RPC Metrics : Add the ability track and log slow RPCs
> -----------------------------------------------------
>
>                 Key: HADOOP-12325
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12325
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc, metrics
>    Affects Versions: 2.7.1
>            Reporter: Anu Engineer
>            Assignee: Anu Engineer
>             Fix For: 2.8.0, 2.7.4, 3.0.0-alpha1
>
>         Attachments: Callers of WritableRpcEngine.call.png, HADOOP-12325-branch-2.7.00.patch,
HADOOP-12325.001.patch, HADOOP-12325.002.patch, HADOOP-12325.003.patch, HADOOP-12325.004.patch,
HADOOP-12325.005.patch, HADOOP-12325.005.test.patch, HADOOP-12325.006.patch
>
>
> This JIRA proposes to add a counter called RpcSlowCalls and also a configuration setting
that allows users to log really slow RPCs.  Slow RPCs are RPCs that fall at 99th percentile.
This is useful to troubleshoot why certain services like name node freezes under heavy load.



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