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284925508a
heapam_scan_analyze_next_tuple() doesn't distinguish between dead and recently dead tuples when counting them, so it doesn't need OldestXmin. GetOldestNonRemovableTransactionId() isn't free, so removing it is a win. Looking at other table AMs implementing table_scan_analyze_next_tuple(), we couldn't find one using OldestXmin either, so remove it from the callback. Author: Melanie Plageman <melanieplageman@gmail.com> Suggested-by: Kirill Reshke <reshkekirill@gmail.com> Reviewed-by: Kirill Reshke <reshkekirill@gmail.com> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Discussion: https://postgr.es/m/CALdSSPjvhGXihT_9f-GJabYU%3D_PjrFDUxYaURuTbfLyQM6TErg%40mail.gmail.com |
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