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https://issues.apache.org/jira/browse/HIVE-25938?focusedWorklogId=725275&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-725275
]
ASF GitHub Bot logged work on HIVE-25938:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 11/Feb/22 16:57
Start Date: 11/Feb/22 16:57
Worklog Time Spent: 10m
Work Description: asolimando commented on a change in pull request #3011:
URL: https://github.com/apache/hive/pull/3011#discussion_r804838326
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/parse/CalcitePlanner.java
##########
@@ -2026,6 +2038,8 @@ protected RelNode
applyMaterializedViewRewriting(RelOptPlanner planner, RelNode
// Optimize plan
if (!ruleExclusionRegex.isEmpty()) {
+ LOG.debug("The CBO rules matching the following regex are excluded
from planning: {}",
Review comment:
I think this is a very valid point, and this property should not be on
apart from very edge cases, so I don't think it will clog the output much. Let
me move from debug to info as you suggest!
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Issue Time Tracking
-------------------
Worklog Id: (was: 725275)
Time Spent: 1h (was: 50m)
> Print excluded rules from CBO
> -----------------------------
>
> Key: HIVE-25938
> URL: https://issues.apache.org/jira/browse/HIVE-25938
> Project: Hive
> Issue Type: Improvement
> Components: CBO
> Affects Versions: 4.0.0
> Reporter: Alessandro Solimando
> Assignee: Alessandro Solimando
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> HIVE-25880 introduced a configuration parameter for excluding CBO rules based
> on a regex on their description.
> Calcite logs when a rule is excluded (see
> [AbstractRelOptPlanner.java#L316|https://github.com/apache/calcite/blob/e42b85a45bd16dd58db1546736e653deda5463fe/core/src/main/java/org/apache/calcite/plan/AbstractRelOptPlanner.java#L316]
> and
> [VolcanoRuleCall.java#L169|https://github.com/apache/calcite/blob/e42b85a45bd16dd58db1546736e653deda5463fe/core/src/main/java/org/apache/calcite/plan/volcano/VolcanoRuleCall.java#L169]).
> To ease investigations, this should be complemented by printing the regex
> used (if not blank) in Hive DEBUG logs, and the same in CBO information
> (i.e., EXPLAIN CBO's output).
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