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https://issues.apache.org/jira/browse/HADOOP-13845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16098416#comment-16098416
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Yonger commented on HADOOP-13845:
---------------------------------
Does this make sense?
{code:java}
Duration duration = new Duration();
ObjectListing listing= s3.listObjects(request);
duration.finished();
durationStats.add(method.getName()+" " + reason, duration, success);
return listing;
{code}
> s3a to instrument duration of HTTP calls
> ----------------------------------------
>
> Key: HADOOP-13845
> URL: https://issues.apache.org/jira/browse/HADOOP-13845
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 2.9.0
> Reporter: Steve Loughran
> Priority: Minor
>
> HADOOP-13844 proposes pulling out the swift duration classes for reuse; this
> patch proposes instrumenting s3a with it.
> One interesting question: what to do with the values. For now, they could
> just be printed, but it might be interesting to include in FS stats collected
> at the end of a run. However, those are all assumed to be simple counters
> where merging is a matter of addition. These are more metrics
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