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https://issues.apache.org/jira/browse/HIVE-11297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ferdinand Xu updated HIVE-11297:
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Affects Version/s: (was: spark-branch)
3.0.0
> Combine op trees for partition info generating tasks
> ----------------------------------------------------
>
> Key: HIVE-11297
> URL: https://issues.apache.org/jira/browse/HIVE-11297
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Chao Sun
> Assignee: liyunzhang_intel
> Fix For: 3.0.0
>
> Attachments: HIVE-11297.1.patch, HIVE-11297.2.patch,
> HIVE-11297.3.patch, HIVE-11297.4.patch, HIVE-11297.5.patch,
> HIVE-11297.6.patch, HIVE-11297.7.patch, HIVE-11297.8.patch, hive-site.xml
>
>
> Currently, for dynamic partition pruning in Spark, if a small table generates
> partition info for more than one partition columns, multiple operator trees
> are created, which all start from the same table scan op, but have different
> spark partition pruning sinks.
> As an optimization, we can combine these op trees and so don't have to do
> table scan multiple times.
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