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https://issues.apache.org/jira/browse/HDFS-7733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli closed HDFS-7733.
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> NFS: readdir/readdirplus return null directory attribute on failure
> -------------------------------------------------------------------
>
> Key: HDFS-7733
> URL: https://issues.apache.org/jira/browse/HDFS-7733
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: nfs
> Affects Versions: 2.6.0
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Labels: 2.6.1-candidate
> Fix For: 2.6.1
>
> Attachments: HDFS-7733.01.patch
>
>
> NFS readdir and readdirplus operations return a null directory attribute on
> some failure paths. This causes clients to get a 'Stale file handle' error
> which can only be fixed by unmounting and remounting the share.
> The issue can be reproduced by running 'ls' against a large directory which
> is being actively modified, triggering the 'cookie mismatch' failure path.
> {code}
> } else {
> LOG.error("cookieverf mismatch. request cookieverf: " + cookieVerf
> + " dir cookieverf: " + dirStatus.getModificationTime());
> return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_BAD_COOKIE);
> }
> {code}
> Thanks to [~brandonli] for catching the issue.
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