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https://issues.apache.org/jira/browse/SPARK-12850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15117613#comment-15117613
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Xiao Li commented on SPARK-12850:
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Will submit a PR today.
Hive cannot prune buckets when the number of bucket keys is more than one.
Thus, I will follow the same restriction in this PR. Thanks!
> Support bucket pruning (predicate pushdown for bucketed tables)
> ---------------------------------------------------------------
>
> Key: SPARK-12850
> URL: https://issues.apache.org/jira/browse/SPARK-12850
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
>
> We now support bucketing. One optimization opportunity is to push some
> predicates into the scan to skip scanning files that definitely won't match
> the values.
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