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https://issues.apache.org/jira/browse/HIVE-8017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14127087#comment-14127087
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Brock Noland commented on HIVE-8017:
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bq. do you have any comments as how to use the {{-- SORT_BEFORE_DIFF}} label?
I am surprised the query failed if that was before the the set commands? I
think the big item is to ensure that the comment flag {{--}} is before the text
{{SORT_BEFORE_DIFF}}. The code which implements this is here:
https://github.com/apache/hive/blob/trunk/itests/util/src/main/java/org/apache/hadoop/hive/ql/QTestUtil.java#L416
> Use HiveKey instead of BytesWritable as key type of the pair RDD [Spark
> Branch]
> -------------------------------------------------------------------------------
>
> Key: HIVE-8017
> URL: https://issues.apache.org/jira/browse/HIVE-8017
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Reporter: Rui Li
> Assignee: Rui Li
> Attachments: HIVE-8017-spark.patch, HIVE-8017.2-spark.patch
>
>
> HiveKey should be used as the key type because it holds the hash code for
> partitioning. While BytesWritable serves partitioning well for simple cases,
> we have to use {{HiveKey.hashCode}} for more complicated ones, e.g. join,
> bucketed table, etc.
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