branch-4.0: [Exec](profile) add max row count one backend in materialization profile #59728 #59758
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…ile (#59728) - Add `_backend_rows_count` to `MaterializationSharedState` to count the number of rows assigned to each backend during block distribution. - Introduce `_max_rows_per_backend` to record the maximum row count handled by any single backend in the current batch. - Update `merge_multi_response()` to compute `_max_rows_per_backend` after row assignment. - Expose this metric via a new runtime profile counter `MaxRowsPerBackend` in `MaterializationLocalState`. - This helps monitor data skew across backends and aids in performance debugging for materialization-heavy queries.
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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run buildall |
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yiguolei
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Jan 13, 2026
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PR approved by at least one committer and no changes requested. |
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PR approved by anyone and no changes requested. |
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skip buildall |
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Cherry-picked from #59728