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https://issues.apache.org/jira/browse/SPARK-21882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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linxiaojun updated SPARK-21882:
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Attachment: SPARK-21882.patch
SPARK-21882.patch for Spark-1.6.1
> OutputMetrics doesn't count written bytes correctly in the
> saveAsHadoopDataset function
> ---------------------------------------------------------------------------------------
>
> Key: SPARK-21882
> URL: https://issues.apache.org/jira/browse/SPARK-21882
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.6.1, 2.2.0
> Reporter: linxiaojun
> Priority: Minor
> Attachments: SPARK-21882.patch
>
>
> The first job called from saveAsHadoopDataset, running in each executor, does
> not calculate the writtenBytes of OutputMetrics correctly. The reason is that
> we did not initialize the callback function called to find bytes written in
> the right way. As usual, statisticsTable which records statistics in a
> FileSystem must be initialized at the beginning (this will be triggered when
> open SparkHadoopWriter). The solution for this issue is to adjust the order
> of callback function initialization.
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