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https://issues.apache.org/jira/browse/HDFS-2551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13468882#comment-13468882
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Todd Lipcon commented on HDFS-2551:
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bq. One way to fix this would be to call hdfsClose in the fuse flush() method
This would be way too slow -- shutting down and reconstructing the pipeline,
multiple round trips to NN, etc. flush() is used for applications like WALs
which would kill performance here
> fuse-dfs's close() is asynchronous
> ----------------------------------
>
> Key: HDFS-2551
> URL: https://issues.apache.org/jira/browse/HDFS-2551
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: fuse-dfs
> Affects Versions: 0.20.205.0, 0.23.0
> Reporter: Todd Lipcon
>
> FUSE's "release" operation is called asynchronously when a file is closed
> from userspace. This means that, if a program writes a file, closes it, and
> immediately re-opens it, it might not succeed. We should figure out some
> workaround or trick to make close synchronous, if possible.
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