seek(long) in DFSInputStream should catch socket exception for retry later
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Key: HADOOP-3778
URL: https://issues.apache.org/jira/browse/HADOOP-3778
Project: Hadoop Core
Issue Type: Bug
Affects Versions: 0.17.1
Reporter: LN
HADOOP-2346 introduced data read/write timeout. when data stream borken,
DFSClient will retry in read/write methods, but no such mechanism found when
seek(long) calling blockReader.skip(diff) (DFSClient.java #1582), will let
IOException throw to application. i met NPE when using MapFile in hbase.
i'm supposing in the seek(long) method, let done be 'false' will causing retry
(via 'blockEnd = -1'), a patch will attached later for review.
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