[HIVE-25938] Print excluded rules from CBO

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0-alpha-1
• Component/s: CBO
• Labels: pull-request-available
• Assignee: Alessandro Solimando
• Reporter: Alessandro Solimando
• Created: 08/Feb/22 10:11
• Updated: 17/Nov/22 08:48
• Resolved: 22/Feb/22 11:53

Description

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 and 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).

Issue Links

• depends upon: HIVE-25880 Add configuration option to exclude rules by a regex on their description
• links to: GitHub Pull Request #3011