[HIVE-25941] Long compilation time of complex query due to analysis for materialized view rewrite

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: Materialized views
• Labels: pull-request-available
• Target Version/s: 4.0.0
• Assignee: Krisztian Kasa
• Reporter: Krisztian Kasa
• Created: 09/Feb/22 08:24
• Updated: 12/Apr/22 08:22
• Resolved: 12/Apr/22 08:22

Description

When compiling query the optimizer tries to rewrite the query plan or subtrees of the plan to use materialized view scans.

If

set hive.materializedview.rewriting.sql.subquery=false;

the compilation succeed in less then 10 sec otherwise it takes several minutes (~ 5min) depending on the hardware.

Issue Links

• links to: GitHub Pull Request #3014