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https://issues.apache.org/jira/browse/TAJO-583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13894249#comment-13894249
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Hyunsik Choi commented on TAJO-583:
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I've tested all kinds of combinations for joins on partitioned tables. For
example, I did the following tests:
* large partitioned table x small non-partitioned table (broadcasted)
* few partitions of table (broadcasted) x large non-partitioned partition
In addition, I tested the case of both are small, leading a two way join on
single machine.
All work well.
> Broadcast join does not work on partitioned tables
> --------------------------------------------------
>
> Key: TAJO-583
> URL: https://issues.apache.org/jira/browse/TAJO-583
> Project: Tajo
> Issue Type: Bug
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.8-incubating
>
> Attachments: TAJO-583.patch, TAJO-583_140207_141152.patch
>
>
> Broadcast join does not work on partitioned tables. This is because broadcast
> join condition just checks ScanNode whose data volume is smaller than some
> threshold. We should also consider PartitionedTableScan.
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