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From "liyunzhang_intel (JIRA)" <>
Subject [jira] [Updated] (HIVE-11297) Combine op trees for partition info generating tasks [Spark branch]
Date Fri, 23 Jun 2017 04:00:00 GMT


liyunzhang_intel updated HIVE-11297:
    Attachment: HIVE-11297.8.patch

some minor changes about spark_partition_pruning.q.out

> Combine op trees for partition info generating tasks [Spark branch]
> -------------------------------------------------------------------
>                 Key: HIVE-11297
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: spark-branch
>            Reporter: Chao Sun
>            Assignee: liyunzhang_intel
>         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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