Add equals, hashcode, toString to DataChecksum
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Key: HADOOP-7785
URL: https://issues.apache.org/jira/browse/HADOOP-7785
Project: Hadoop Common
Issue Type: Improvement
Components: io, util
Affects Versions: 0.23.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Simple patch to add these functions to the DataChecksum interface. This is
handy for the sake of HDFS-2130.
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