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https://issues.apache.org/jira/browse/HDFS-9729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo Nicholas Sze updated HDFS-9729:
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Attachment: h9729_20160201.patch
h9729_20160201.patch: 1st patch.
> 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
> Attachments: h9729_20160201.patch
>
>
> 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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