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https://issues.apache.org/jira/browse/HADOOP-8365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13279165#comment-13279165
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Eli Collins commented on HADOOP-8365:
-------------------------------------
bq. But sync() does not have a broken implementation as has been shown from its
users
Sync does not work on Hadoop 1.0 unless you enable dfs.support.append, which is
why eg HBase requires it be set.
> Provide ability to disable working sync
> ---------------------------------------
>
> Key: HADOOP-8365
> URL: https://issues.apache.org/jira/browse/HADOOP-8365
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 1.1.0
> Reporter: Eli Collins
> Priority: Blocker
>
> Per HADOOP-8230 there's a request for a flag to disable the sync code paths
> that dfs.support.append used to enable. The sync method itself will still be
> available and have a broken implementation as that was the behavior before
> HADOOP-8230. This config flag should default to false as the primary
> motivation for HADOOP-8230 is so HBase works out-of-the-box with Hadoop 1.1.
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