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  1. Hadoop HDFS
  2. HDFS-7733

NFS: readdir/readdirplus return null directory attribute on failure

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    • Hadoop Flags:
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      Description

      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.

              } else {
                LOG.error("cookieverf mismatch. request cookieverf: " + cookieVerf
                    + " dir cookieverf: " + dirStatus.getModificationTime());
                return new READDIRPLUS3Response(Nfs3Status.NFS3ERR_BAD_COOKIE);
              }
      

      Thanks to Brandon Li for catching the issue.

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            • Assignee:
              arpitagarwal Arpit Agarwal
              Reporter:
              arpitagarwal Arpit Agarwal
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