DFSClient should log instead of printing into std err.
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Key: HADOOP-4965
URL: https://issues.apache.org/jira/browse/HADOOP-4965
Project: Hadoop Core
Issue Type: Bug
Components: dfs
Affects Versions: 0.17.0
Reporter: Konstantin Shvachko
Assignee: Konstantin Shvachko
Fix For: 0.20.0
{{DFSClient.LeaseChecker.close()}} uses {{System.err.println()}} and
{{Exception.printStackTrace()}} to output the exception.{{LOG.error()}} should
be used instead.
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