Chen Zhang created HDFS-14776:
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Summary: 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
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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