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Posted to issues@spark.apache.org by "Yongjia Wang (JIRA)" <ji...@apache.org> on 2016/11/05 07:05:58 UTC

[jira] [Commented] (SPARK-10912) Improve Spark metrics executor.filesystem

    [ https://issues.apache.org/jira/browse/SPARK-10912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15638836#comment-15638836 ] 

Yongjia Wang commented on SPARK-10912:
--------------------------------------

s3a and hdfs are different "schemes" in Spark's FileSystem.Statistics
I think it is Spark's responsibility to choose what to report, and currently only "hdfs" and "file" are reported.
I have been using the attached s3a_metrics.patch to build Spark in order to get the s3a metrics reported. I'm not sure whether there is a way to report s3a metrics just through configuration (without changing Spark source like what was did in the attached patch file).
Now I need to add GoogleHadoopFileSystem's "gs" metrics, please advise the best approach.
Thank you.

> Improve Spark metrics executor.filesystem
> -----------------------------------------
>
>                 Key: SPARK-10912
>                 URL: https://issues.apache.org/jira/browse/SPARK-10912
>             Project: Spark
>          Issue Type: Improvement
>          Components: Deploy
>    Affects Versions: 1.5.0
>            Reporter: Yongjia Wang
>            Priority: Minor
>         Attachments: s3a_metrics.patch
>
>
> In org.apache.spark.executor.ExecutorSource it has 2 filesystem metrics: "hdfs" and "file". I started using s3 as the persistent storage with Spark standalone cluster in EC2, and s3 read/write metrics do not appear anywhere. The 'file' metric appears to be only for driver reading local file, it would be nice to also report shuffle read/write metrics, so it can help with optimization.
> I think these 2 things (s3 and shuffle) are very useful and cover all the missing information about Spark IO especially for s3 setup.



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