Update fetchdt usage
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Key: HDFS-2056
URL: https://issues.apache.org/jira/browse/HDFS-2056
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Tanping Wang
Assignee: Tanping Wang
Priority: MinorUpdate the usage of fetchdt. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira
