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https://issues.apache.org/jira/browse/HIVE-511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712329#action_12712329
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Zheng Shao commented on HIVE-511:
---------------------------------
Text and String are both "STRING" primitive type.
The relationship between Text and String are the same as that between
IntWritable and Integer - they will have WritableStringOI and JavaStringOI,
which both implements StringOI.
> Change the hashcode for DoubleWritable
> --------------------------------------
>
> Key: HIVE-511
> URL: https://issues.apache.org/jira/browse/HIVE-511
> Project: Hadoop Hive
> Issue Type: Bug
> Reporter: Zheng Shao
> Attachments: HIVE-511.1.patch
>
>
> The current DoubleWritable hashCode takes only the last 32 bits. This is a
> big problem because for small integer values like 1.0, 2.0, 15.0, the
> hashCode are all 0.
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