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https://issues.apache.org/jira/browse/HIVE-22408?focusedWorklogId=357905&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-357905
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ASF GitHub Bot logged work on HIVE-22408:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 11/Dec/19 15:31
Start Date: 11/Dec/19 15:31
Worklog Time Spent: 10m
Work Description: kgyrtkirk commented on pull request #860: HIVE-22408
The fix for CALCITE-2991 creates wrong results on edge case
URL: https://github.com/apache/hive/pull/860#discussion_r356664585
##########
File path: ql/src/test/results/clientpositive/llap/mapjoin_hint.q.out
##########
@@ -648,7 +651,7 @@ STAGE PLANS:
outputColumnNames: _col0, _col1, _col2, _col3, _col4,
_col5, _col6, _col7, _col8
input vertices:
1 Reducer 3
- Statistics: Num rows: 1 Data size: 816 Basic stats:
COMPLETE Column stats: NONE
+ Statistics: Num rows: 0 Data size: 0 Basic stats: NONE
Column stats: NONE
Review comment:
it's great that now we are able to deduce that there will be 0 rows...
I'm wondering if there will be any sideeffects of this `Basic stats: NONE`.
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Issue Time Tracking
-------------------
Worklog Id: (was: 357905)
Time Spent: 20m (was: 10m)
> The fix for CALCITE-2991 creates wrong results on edge case
> -----------------------------------------------------------
>
> Key: HIVE-22408
> URL: https://issues.apache.org/jira/browse/HIVE-22408
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 3.1.2
> Reporter: Steve Carlin
> Assignee: Vineet Garg
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-22408.1.patch, HIVE-22408.2.patch,
> HIVE-22408.3.patch, HIVE-22408.4.patch, HIVE-22408.5.patch, HIVE-22408.6.patch
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The Calcite upgrade from 1.19 to 1.21 includes a fix for CALCITE-2991. This
> patch causes a failure in subquery_ALL.q
> In order to proceed with the upgrade, the patch was bypassed by creating the
> HiveRelMdMaxRowCount class which overrides the behavior in Calcite.
> In order to recreate the regression, remove this file and the references to
> the class in HiveDefaultRelMetadataProvider.
> This Jira is being created before the HIVE-22274 PR has been pushed, so
> please wait until that is pushed before working on this.
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