Brandon Li created HDFS-7259:
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Summary: 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
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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