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https://issues.apache.org/jira/browse/HADOOP-15074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408715#comment-16408715
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Arpit Agarwal commented on HADOOP-15074:
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Hi Shashikant, I don't think we should change the default behavior of
{{DFSOutputStream#hsync(void)}}. There is a
{{DFSOutputStream#hsync(EnumSet<SyncFlag> syncFlags)}} overload that optionally
takes sync flags.
If the desired behavior is for {{Writer#hsync}} to update the length on the
NameNode, then it should pass the UPDATE_LENGTH flag. i.e. make the change in
SequenceFileWriter.
> SequenceFile#Writer flush does not update the length of the written file.
> -------------------------------------------------------------------------
>
> Key: HADOOP-15074
> URL: https://issues.apache.org/jira/browse/HADOOP-15074
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Mukul Kumar Singh
> Assignee: Shashikant Banerjee
> Priority: Major
>
> SequenceFile#Writer flush does not update the length of the file. This
> happens because as part of the flush, {{UPDATE_LENGTH}} flag is not passed to
> the DFSOutputStream#hsync.
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