jfsii commented on a change in pull request #3011:
URL: https://github.com/apache/hive/pull/3011#discussion_r804809478
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File path: ql/src/java/org/apache/hadoop/hive/ql/parse/CalcitePlanner.java
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@@ -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 would maybe argue to make these info since they could modify planning
in strange ways and most users do not run with debug logging on. Sure they
could run EXPLAIN on the plan to see, but sometimes the person doing the
initial debugging doesn't have access to the EXPLAIN output (they just have a
set of logs and a description of "queries are returning wrong results").
Anyways - this is just a suggestion and if you feel different go ahead and
ignore because I can see the other argument of not wanting to add more INFO log
lines.
Thanks for this work @asolimando
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