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https://issues.apache.org/jira/browse/HIVE-21867?focusedWorklogId=267050&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-267050
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ASF GitHub Bot logged work on HIVE-21867:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 25/Jun/19 21:28
Start Date: 25/Jun/19 21:28
Worklog Time Spent: 10m
Work Description: vineetgarg02 commented on pull request #687: HIVE-21867
URL: https://github.com/apache/hive/pull/687#discussion_r297397916
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File path: ql/src/test/results/clientpositive/llap/hybridgrace_hashjoin_2.q.out
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@@ -1421,7 +1421,7 @@ STAGE PLANS:
outputColumnNames: _col1
input vertices:
1 Map 5
- Statistics: Num rows: 25 Data size: 2225 Basic
stats: COMPLETE Column stats: COMPLETE
+ Statistics: Num rows: 4 Data size: 356 Basic stats:
COMPLETE Column stats: COMPLETE
Review comment:
I wonder why stats estimation changed
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Issue Time Tracking
-------------------
Worklog Id: (was: 267050)
Time Spent: 20m (was: 10m)
> Sort semijoin conditions to accelerate query processing
> -------------------------------------------------------
>
> Key: HIVE-21867
> URL: https://issues.apache.org/jira/browse/HIVE-21867
> Project: Hive
> Issue Type: New Feature
> Components: Physical Optimizer
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-21867.02.patch, HIVE-21867.03.patch,
> HIVE-21867.patch
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The problem was tackled for CBO in HIVE-21857. Semijoin filters are
> introduced later in the planning phase. Follow similar approach to sort them,
> trying to accelerate filter evaluation.
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