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https://issues.apache.org/jira/browse/HDFS-9164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14977067#comment-14977067
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Mingliang Liu commented on HDFS-9164:
-------------------------------------
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> hdfs-nfs connector fails on O_TRUNC
> -----------------------------------
>
> Key: HDFS-9164
> URL: https://issues.apache.org/jira/browse/HDFS-9164
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: HDFS
> Reporter: Constantine Peresypkin
> Attachments: HDFS-9164.1.patch
>
>
> Linux NFS client will issue `open(.. O_TRUNC); write()` when overwriting a
> file that's in nfs client cache (to not evict the inode, probably). Which
> will spectacularly fail on hdfs-nfs with I/O error.
> Example:
> $ cp /some/file /to/hdfs/mount/
> $ cp /some/file /to/hdfs/mount/
> I/O error
> The first write will pass if the file is not in cache, the second one will
> always fail.
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