maheshrajus opened a new pull request, #6815:
URL: https://github.com/apache/hive/pull/6815
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### What changes were proposed in this pull request?
Removes the obsolete hive.optimize.index.filter configuration and every
reference to it.
### Why are the changes needed?
Hive indexes were removed in 4.0.0 (HIVE-18715), but
hive.optimize.index.filter survived as dead configuration. The
name is actively misleading — it no longer has anything to do with
indexes; it gates ordinary predicate push-down
to the table scan, which hive.optimize.ppd already controls. Keeping it
means two knobs for one behavior, a
confusing entry in the config docs, and hundreds of set lines in qtests
that suggest a toggle users should care
about.
### Does this PR introduce _any_ user-facing change?
Yes, two:
1. The config(hive.optimize.index.filter) is gone. Because
hive.optimize.index.filter defaulted to true, anyone leaving it at the default
sees
no behavior change. Anyone explicitly setting it to false to suppress
predicate push-down loses that control and
must use hive.optimize.ppd=false instead. With hive.conf.validation=true
(the default), setting the removed key now
raises an unknown-config error rather than being silently ignored.
2. Error message text changed in LeafFilterFactory for unsupported Parquet
FilterPredicate conversions — it now
recommends only set hive.optimize.ppd=false.
### How was this patch tested?
Existing tests
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