praveenc7 opened a new pull request, #17822:
URL: https://github.com/apache/pinot/pull/17822
## Summary
- When PurgeTask rebuilds a segment (after purging compliance/late-event
records), SegmentPurger creates a new segment via SegmentGeneratorConfig which
unconditionally picks up starTreeIndexConfigs from the table config. This
causes old segments to unexpectedly gain star-tree indexes during purge, even
when `enableDynamicStarTreeCreation` is false.
- This change makes SegmentPurger.initSegmentGeneratorConfig() respect
enableDynamicStarTreeCreation — if it's false (default), star-tree configs are
cleared before segment generation, preventing unintended star-tree
add/remove/modify during purge rebuilds.
https://github.com/linkedin/pinot/pull/141
## Test plan
unit test
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