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https://issues.apache.org/jira/browse/HBASE-5954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13474827#comment-13474827
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Lars Hofhansl commented on HBASE-5954:
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Hi Luke,
you mean hflush in hadoop 2 less durable than hflush in hadoop 1. hsync is
still better (even when it is not on the synchronous path, so there's a little
gap where a client was told that everything is on disk when in fact it isn't).
Filed HDFS-3979 (you know that :), just for the benefit of others reading
here), which needs some testing to be committed.
Since the hsync code is only in hadoop 2.1.0+ we'd need a new shim here for
that version (or reflect the sh*t out of it).
I'm still happy to commit this to 0.94.x.
> Allow proper fsync support for HBase
> ------------------------------------
>
> Key: HBASE-5954
> URL: https://issues.apache.org/jira/browse/HBASE-5954
> Project: HBase
> Issue Type: Improvement
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Fix For: 0.94.3, 0.96.0
>
> Attachments: 5954-trunk-hdfs-trunk.txt, 5954-trunk-hdfs-trunk-v2.txt,
> 5954-trunk-hdfs-trunk-v3.txt, 5954-trunk-hdfs-trunk-v4.txt,
> 5954-trunk-hdfs-trunk-v5.txt, 5954-trunk-hdfs-trunk-v6.txt, hbase-hdfs-744.txt
>
>
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