DFSClient should use debug level to log missing data-node.
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Key: HADOOP-583
URL: http://issues.apache.org/jira/browse/HADOOP-583
Project: Hadoop
Issue Type: Improvement
Components: dfs
Affects Versions: 0.7.0
Reporter: Konstantin Shvachko
Assigned To: Konstantin Shvachko
Priority: Minor
When DFSClient cannot read a block replica it logs a message saying
"Failed to connect to <target> ..." + exception
and then tries other replicas. If the client succeeds with another replica this
is only record that the log will contain. This seems to be confusing for users.
So I propose to use debug logging level here.
I also stringified exceptions.
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