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https://issues.apache.org/jira/browse/HDFS-14776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Zhang resolved HDFS-14776.
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Resolution: Abandoned
> Log more detail for slow RPC
> ----------------------------
>
> Key: HDFS-14776
> URL: https://issues.apache.org/jira/browse/HDFS-14776
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Chen Zhang
> Priority: Major
>
> 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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