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https://issues.apache.org/jira/browse/HADOOP-12949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15209186#comment-15209186
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Steve Loughran commented on HADOOP-12949:
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Mine was just a hash map of the HTTP verbs, updated as appropriate. Handling
all FS ops would need a per-fs instance table, more efficient to use some enum
as an index.
> Add metrics and HTrace to the s3a connector
> -------------------------------------------
>
> Key: HADOOP-12949
> URL: https://issues.apache.org/jira/browse/HADOOP-12949
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs/s3
> Reporter: Madhawa Gunasekara
>
> Hi All,
> s3, GCS, WASB, and other cloud blob stores are becoming increasingly
> important in Hadoop. But we don't have distributed tracing for these yet. It
> would be interesting to add distributed tracing here. It would enable
> collecting really interesting data like probability distributions of PUT and
> GET requests to s3 and their impact on MR jobs, etc.
> I would like to implement this feature, Please shed some light on this
> Thanks,
> Madhawa
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