ziyanTOP opened a new pull request, #669:
URL: https://github.com/apache/doris-flink-connector/pull/669

   ## Problem Summary
   
   Currently `mongodb-sync-database` does not expose several useful MongoDB CDC 
source options. Users cannot configure snapshot chunk granularity or reader 
behavior, which can lead to OOM when syncing large collections.
   
   ## Changes
   
   Expose the following MongoDB CDC source options:
   
   - `scan.incremental.snapshot.chunk.size.mb`
   - `scan.incremental.snapshot.chunk.samples`
   - `split.meta.group.size`
   - `close.idle.readers`
   - `scan.full-changelog`
   - `scan.cursor.no-timeout`
   
   Fixes #665


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