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https://issues.apache.org/jira/browse/HADOOP-3146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583996#action_12583996
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dhruba borthakur commented on HADOOP-3146:
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I agree. I think we should revert back the semantics of DFSOutputStream.flush()
to what it was in 0.16. Also, introduce a new call DFSOutputStream.sync() that
actually waits for packets to get acknowledged from datanodes. Patch coming
soon....
> SequenceFile should not call flush excessively
> ----------------------------------------------
>
> Key: HADOOP-3146
> URL: https://issues.apache.org/jira/browse/HADOOP-3146
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: Runping Qi
> Fix For: 0.17.0
>
>
> Starting fron hadoop-0.17, calling flush of dfs becomes very expensive.
> It does not make much sense to call flush inside append.
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