LiXin Ge created HDFS-13086:
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Summary: Add a field about exception type to BlockOpResponseProto
Key: HDFS-13086
URL: https://issues.apache.org/jira/browse/HDFS-13086
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 3.1.0
Reporter: LiXin Ge
Assignee: LiXin Ge
When user re-read a file in the way of short-circuit reads, it may come across
unknown errors due to the reasons that the file has been appended after the
first read which changes it's meta file, or the file has been moved away by the
balancer.
Such unknown errors will unnecessary disable short-circuit reads for 10
minutes. HDFS-12528 Make the {{expireAfterWrite}} of
{{DomainSocketFactory$pathMap}} configurable to give user a choice of never
disable the domain socket.
We can go a step further that add a field about exception type to
BlockOpResponseProto, so that we can Ignore the acceptable FNFE and set a
appropriate disable time to handle the unacceptable exceptions when different
type of exception happens in the same cluster.
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