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Posted to issues@spark.apache.org by "Marcelo Vanzin (JIRA)" <ji...@apache.org> on 2016/11/29 22:57:58 UTC

[jira] [Created] (SPARK-18636) UnsafeShuffleWriter and DiskBlockObjectWriter do not consider encryption / compression in metrics

Marcelo Vanzin created SPARK-18636:
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             Summary: UnsafeShuffleWriter and DiskBlockObjectWriter do not consider encryption / compression in metrics
                 Key: SPARK-18636
                 URL: https://issues.apache.org/jira/browse/SPARK-18636
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 2.0.0
            Reporter: Marcelo Vanzin
            Priority: Minor


The code in {{UnsafeShuffleWriter}} and {{DiskBlockObjectWriter}} only wraps the file output stream when collecting metrics, so it does not count the time it takes to compress and / or encrypt the data. This makes the metrics a little less accurate than they should be.



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