Hastyshell commented on PR #61380:
URL: https://github.com/apache/doris/pull/61380#issuecomment-4072185619

   Addressed @gavinchou's question by adding an inline comment at the fix site. 
Key points: STOP_TOKEN's `compaction_cnt` fields are never read back and carry 
no semantic meaning; concurrent uniqueness per tablet is enforced at two levels 
— same-BE via `_active_compaction_stop_tokens` map, cross-BE via the 
`JOB_TABLET_BUSY` conflict check a few lines below — so at most one non-expired 
STOP_TOKEN can exist per tablet at any time.


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