fix: SortPreservingMerge round-robin tie breaker reads stale poll counts, so tied keys are mostly drained from one partition - #24585

Merged

jayzhan211 merged 3 commits into

apache:mainfrom

jayzhan211:fix-spm-round-robin-stale-poll-count

Aug 27, 2026

Commits on Aug 23, 2026

fix: SortPreservingMerge round-robin tie breaker reads stale poll counts
jayzhan211
committed
0a9b0de
bench: add SortPreservingMerge case with tied keys and slow producers
jayzhan211
committed
d39a2fd

Commits on Aug 26, 2026

feat: add tracing tests for round-robin tie breaker behavior in SortPreservingMerge
jayzhan211
committed
bb97b6d