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https://issues.apache.org/jira/browse/HDFS-1918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032041#comment-13032041
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Jean-Daniel Cryans commented on HDFS-1918:
------------------------------------------
Oh looking at trunk it's going to be printed a 3rd time in
BlockSender.sendChunks:
{code}
LOG.error("BlockSender.sendChunks() exception: " +
StringUtils.stringifyException(e));
{code}
> DataXceiver double logs every IOE out of readBlock
> --------------------------------------------------
>
> 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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