haripriyarhp commented on issue #6166:
URL: https://github.com/apache/hudi/issues/6166#issuecomment-1191910129

   Okay, let me clarify. 
   First, i sent 100 messages. It was fine. Athena also showed 100 records
   Next I sent 100 new messages + 25 updates + 25 duplicates of previous 100 
messages. In total there are 250 messages in Kafka but Athena showed only 247. 
Irrespective of inserts, duplicates or updates, I am assuming that the 
connector should append the messages. 
   Later on, I continued sending several rounds of messages and found that the 
count did not match. Few records were missing (somewhere between 20 -50) for 
around 500-600 messages sent to Kafka. I made this test several times And each 
time, there were some missing records. 
   I tested with CoW too, it also had missing records. The no.of records in 
Athena was always less than no.of messages in Kafka 


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