[jira] [Created] (HDFS-9729) Use null to replace DataNode.EMPTY_DEL_HINT

[Tsz Wo Nicholas Sze (JIRA)]

Tsz Wo Nicholas Sze created HDFS-9729:
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             Summary: Use null to replace DataNode.EMPTY_DEL_HINT
                 Key: HDFS-9729
                 URL: https://issues.apache.org/jira/browse/HDFS-9729
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: datanode
            Reporter: Tsz Wo Nicholas Sze
            Assignee: Tsz Wo Nicholas Sze
            Priority: Minor


When a delete-hint is unavailable, the current code may use null or 
DataNode.EMPTY_DEL_HINT as a default value.  Let's uniformly use null for an 
empty delele-hint.



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