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https://issues.apache.org/jira/browse/HIVE-18872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vineet Garg updated HIVE-18872:
-------------------------------
Fix Version/s: (was: 3.0.0)
3.1.0
Deferring this to 3.1.0 since the branch for 3.0.0 has been cut off. Please
update the JIRA if you would like to get your patch in 3.0.0.
> Projection is not pushed properly when query involves multiple tables
> ---------------------------------------------------------------------
>
> Key: HIVE-18872
> URL: https://issues.apache.org/jira/browse/HIVE-18872
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Ankit Singhal
> Assignee: Ankit Singhal
> Priority: Major
> Fix For: 3.1.0
>
> Attachments: HIVE-18872.patch
>
>
> Projections are not pushed down properly during getSplit() when the query
> involves multiple tables although they are getting properly pushed during
> getRecordReader when the task is working on the split. Due to this, storage
> handler relying on projections for building query while generating input
> splits are not working.
> here, in below case, due to bug we will be pushing ID2 for both the aliases
> "A" and "B" during addSplitsForGroup instead of pushing DB for alias "A" and
> ID2 only for alias "B".
> SELECT A.ID, a.db, B.ID2 from joinTable3 A join joinTable4 B on A.ID = B.ID
> WHERE A.ID=10;
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