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https://issues.apache.org/jira/browse/HADOOP-16531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16924457#comment-16924457
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Hudson commented on HADOOP-16531:
---------------------------------
FAILURE: Integrated in Jenkins build Hadoop-trunk-Commit #17244 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17244/])
HADOOP-16531. Log more timing information for slow RPCs. Contributed by
(xkrogen: rev a23417533e1ee052893baf207ec636c4993c5994)
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
> 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
>
> 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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