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https://issues.apache.org/jira/browse/HDFS-7259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Li updated HDFS-7259:
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Attachment: HDFS-7259.001.patch
> Unresponseive NFS mount point due to deferred COMMIT response
> -------------------------------------------------------------
>
> Key: HDFS-7259
> URL: https://issues.apache.org/jira/browse/HDFS-7259
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: nfs
> Affects Versions: 2.2.0
> Reporter: Brandon Li
> Assignee: Brandon Li
> Attachments: HDFS-7259.001.patch
>
>
> Since the gateway can't commit random write, it caches the COMMIT requests in
> a queue and send back response only when the data can be committed or stream
> timeout (failure in the latter case). This could cause problems two patterns:
> (1) file uploading failure
> (2) the mount dir is stuck on the same client, but other NFS clients can
> still access NFS gateway.
> The error pattern (2) is because there are too many COMMIT requests pending,
> so the NFS client can't send any other requests(e.g., for "ls") to NFS
> gateway with its pending requests limit.
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