DataXceiver double logs every IOE out of readBlock
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Key: HDFS-1918
URL: https://issues.apache.org/jira/browse/HDFS-1918
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 0.20.2
Reporter: Jean-Daniel Cryans
Priority: Trivial
Fix For: 0.22.0
DataXceiver will log an IOE twice because opReadBlock() will catch it, log a
WARN, then throw it again only to be caught in run() as a Throwable and logged
as an ERROR. As far as I can tell all the information is the same in both
messages.
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