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https://issues.apache.org/jira/browse/SPARK-1518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14009135#comment-14009135
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Patrick Wendell commented on SPARK-1518:
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Hey [~cmccabe], what is the oldest version of hadooop that contains hflush? /cc
[~andrewor] who IIRC looked into this a bunch when writing the logger.
> Spark master doesn't compile against hadoop-common trunk
> --------------------------------------------------------
>
> Key: SPARK-1518
> URL: https://issues.apache.org/jira/browse/SPARK-1518
> Project: Spark
> Issue Type: Bug
> Reporter: Marcelo Vanzin
> Assignee: Colin Patrick McCabe
>
> FSDataOutputStream::sync() has disappeared from trunk in Hadoop;
> FileLogger.scala is calling it.
> I've changed it locally to hsync() so I can compile the code, but haven't
> checked yet whether those are equivalent. hsync() seems to have been there
> forever, so it hopefully works with all versions Spark cares about.
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