[fix](merge-on-write) segcompaction should process delete bitmap if necessary (#38369)#39707
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yiguolei merged 6 commits intoapache:branch-2.1from Aug 21, 2024
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…ecessary (apache#38369) Issue Number: close #xxx When loading data to a unique key table with sequence column, some data in current load job might be marked as delete due to a lower sequence value. If there's many segments in such load job, segcompaction might be triggered, which don't process the delete bitmap currently, will cause data correctness issue For example: 1. we have 4 segments in current load job initially, and due to seq column, some rows are marked as deleted 2. after segcompaction, if we don't process the delete bitmap, it's content is still corresponding to the old segment layout, and row 7,14,15 is not mark deleted correctly on new generated segment 1. 3. in this PR, we convert old delete bitmap to fit new segment layout, it use similar way as base/cumulative compaction to convert delete bitmaps on old layout to new one, but the rowid conversion is simpler 
## Proposed changes Issue Number: close #xxx introduced by apache#38369
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…ecessary (apache#38369) (apache#39707) Issue Number: close #xxx cherry-pick apache#38369 and apache#38800
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Proposed changes
Issue Number: close #xxx
cherry-pick #38369 and #38800