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From "Wei-Chiu Chuang (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-16531) Log more detail for slow RPC
Date Tue, 01 Oct 2019 00:58:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-16531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wei-Chiu Chuang updated HADOOP-16531:
-------------------------------------
    Fix Version/s: 3.2.2
                   3.1.4

> Log more detail for slow RPC
> ----------------------------
>
>                 Key: HADOOP-16531
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16531
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Chen Zhang
>            Assignee: Chen Zhang
>            Priority: Major
>             Fix For: 3.3.0, 3.1.4, 3.2.2
>
>         Attachments: HADOOP-16531.001.patch
>
>
> Current implementation only log process time
> {code:java}
> if ((rpcMetrics.getProcessingSampleCount() > minSampleSize) &&
>     (processingTime > threeSigma)) {
>   LOG.warn("Slow RPC : {} took {} {} to process from client {}",
>       methodName, processingTime, RpcMetrics.TIMEUNIT, call);
>   rpcMetrics.incrSlowRpc();
> }
> {code}
> We need to log more details to help us locate the problem (eg. how long it take to request
lock, holding lock, or do other things)



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