yashmayya commented on PR #13646:
URL: https://github.com/apache/kafka/pull/13646#issuecomment-1527292922

   Thanks @sambhav-jain-16 
   
   > What I suspect is happening is that when the method is initially storing 
the end offsets of the partitions, the connector hasn't produced 100 records 
till then and therefore the method doesn't consume fully even though messages 
are being produced by the connector.
   
   I'm not sure how this is is possible given that we're waiting for 
`MINIMUM_MESSAGES` to be committed 
first?https://github.com/apache/kafka/blob/c6ad151ac3bac0d8d1d6985d230eacaa170b8984/connect/runtime/src/test/java/org/apache/kafka/connect/integration/ExactlyOnceSourceIntegrationTest.java#L399-L410
 (i.e. `SourceTask::commitRecord` is called `MINIMUM_MESSAGES` number of times).
   
   Records are "committed" only after the producer transaction is committed 
successfully -
   
   
https://github.com/apache/kafka/blob/c6ad151ac3bac0d8d1d6985d230eacaa170b8984/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ExactlyOnceWorkerSourceTask.java#L302-L332


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