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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/04/19 00:17:00 UTC
[jira] [Work logged] (HIVE-25952) Drop HiveRelMdPredicates::getPredicates(Project...) to use that of RelMdPredicates
[ https://issues.apache.org/jira/browse/HIVE-25952?focusedWorklogId=758176&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-758176 ]
ASF GitHub Bot logged work on HIVE-25952:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Apr/22 00:16
Start Date: 19/Apr/22 00:16
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on PR #3024:
URL: https://github.com/apache/hive/pull/3024#issuecomment-1101873703
This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.
Issue Time Tracking
-------------------
Worklog Id: (was: 758176)
Time Spent: 1h 10m (was: 1h)
> Drop HiveRelMdPredicates::getPredicates(Project...) to use that of RelMdPredicates
> ----------------------------------------------------------------------------------
>
> Key: HIVE-25952
> URL: https://issues.apache.org/jira/browse/HIVE-25952
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Affects Versions: 4.0.0
> Reporter: Alessandro Solimando
> Assignee: Alessandro Solimando
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> There are some differences on this method between Hive and Calcite, the idea of this ticket is to unify the two methods, and then drop the override in HiveRelMdPredicates in favour of the method of RelMdPredicates.
> After applying HIVE-25966, the only difference is in the test for constant expressions, which can be summarized as follows:
> ||Expression Type|Is Constant for Hive?||Is Constant for Calcite?||
> |InputRef|False|False|
> |Call|True if function is deterministic (arguments are not checked), false otherwise|True if function is deterministic and all operands are constants, false otherwise|
> |CorrelatedVariable|False|False|
> |LocalRef|False|False|
> |Over|False|False|
> |DymanicParameter|False|True|
> |RangeRef|False|False|
> |FieldAccess|False|Given expr.field, true if expr is constant, false otherwise|
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