[INLONG-10630][Sort] Make SQL Server source support report audit information exactly once #10631
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[INLONG-10630][Sort] Make SQL Server source support report audit information exactly once
Fixes #10630
Modifications
is written during this ongoing checkpoint. The audit information and checkpointId are in a many-to-one relationship.
When a snapshot request is received, the current operator's nowCheckpointId is updated to (snapshot) checkpointId + 1. When all operators in a task complete the snapshot, the notifyCompleteCheckpoint method is called back.
At this time, AuditBuffer uploads audit information less than or equal to checkpointId (parameters in the notifyCompleteCheckpoint method).