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https://issues.apache.org/jira/browse/HADOOP-14973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16223404#comment-16223404
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Steve Loughran commented on HADOOP-14973:
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yes, that's the one.: linked direct. It's using specific file as a sink, which
also means isolated from all other noise. Try that today, if you want something
in the rolling logs, let's add a new sync. I think I'd like that for testing
anyway, as it would get all stats into test results automatically
> [s3a] Log StorageStatistics
> ---------------------------
>
> Key: HADOOP-14973
> URL: https://issues.apache.org/jira/browse/HADOOP-14973
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.0.0-beta1, 2.8.1
> Reporter: Sean Mackrory
> Assignee: Sean Mackrory
>
> S3A is currently storing much more detailed metrics via StorageStatistics
> than are logged in a MapReduce job. Eventually, it would be nice to get
> Spark, MapReduce and other workloads to retrieve and store these metrics, but
> it may be some time before they all do that. I'd like to consider having S3A
> publish the metrics itself in some form. This is tricky, as S3A has no daemon
> but lives inside various other processes.
> Perhaps writing to a log file at some configurable interval and on close()
> would be the best we could do. Other ideas would be welcome.
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