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https://issues.apache.org/jira/browse/HIVE-22120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16910658#comment-16910658
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Ramesh Kumar Thangarajan commented on HIVE-22120:
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Hi [~jdere]
I have addressed your offline comments about the Limit operator resizing the
selected array and modified the test files to read data from a csv file. Can
you please review my pull request [https://github.com/apache/hive/pull/753] and
let me know your thoughts?
Thanks,
Ramesh
> Fix wrong results/ArrayOutOfBound exception in left outer map joins on
> specific boundary conditions
> ---------------------------------------------------------------------------------------------------
>
> Key: HIVE-22120
> URL: https://issues.apache.org/jira/browse/HIVE-22120
> Project: Hive
> Issue Type: Bug
> Components: Hive, llap, Vectorization
> Affects Versions: 4.0.0
> Reporter: Ramesh Kumar Thangarajan
> Assignee: Ramesh Kumar Thangarajan
> Priority: Major
> Attachments: HIVE-22120.1.patch, HIVE-22120.2.patch,
> HIVE-22120.3.patch
>
>
> Vectorized version of left outer map join produces wrong results or
> encounters ArrayOutOfBound exception.
> The boundary conditions are:
> * The complete batch of the big table should have the join key repeated for
> all the join columns.
> * The complete batch of the big table should have not have a matched key
> value in the small table
> * The repeated value should not be a null value
> * Some rows should be filtered out as part of the on clause filter.
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