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https://issues.apache.org/jira/browse/HIVE-24231?focusedWorklogId=499962&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-499962
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ASF GitHub Bot logged work on HIVE-24231:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 13/Oct/20 10:03
Start Date: 13/Oct/20 10:03
Worklog Time Spent: 10m
Work Description: kgyrtkirk commented on a change in pull request #1553:
URL: https://github.com/apache/hive/pull/1553#discussion_r503826556
##########
File path:
ql/src/test/results/clientpositive/llap/cbo_SortUnionTransposeRule.q.out
##########
@@ -1006,6 +1027,22 @@ STAGE PLANS:
output format:
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
serde:
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
Reducer 5
+ Execution mode: vectorized, llap
Review comment:
This is caused by enabling the schema merge for all the optimizations.
Apparently the greedy operator chain matching logic worked slightly better when
it was run w/o ts-merge first and only then executed to also consider merging
the schema.
In this patch I will only introduce the new optimization and do the
generalization in either in the "downstream merge" patch or completely
separately; it will worth because it will enable the `RemoveSemiJoin` mode to
consider merging the ts schema
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Issue Time Tracking
-------------------
Worklog Id: (was: 499962)
Time Spent: 1.5h (was: 1h 20m)
> Enhance shared work optimizer to merge scans with filters on both sides
> -----------------------------------------------------------------------
>
> Key: HIVE-24231
> URL: https://issues.apache.org/jira/browse/HIVE-24231
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
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