tomma-a commented on issue #10193:
URL: https://github.com/apache/seatunnel/issues/10193#issuecomment-3696373101

   Hello @Carl-Zhou-CN  @yzeng1618 
   
   Maybe the root cause is:   "semantics = EXACTLY_ONCE" here as below:
   
   when restoring from flink checkpoint , the kafka transaction id not match 
which prevent the flink sink operator  to be restored from checkpoint!   (just 
I my guess and further test)
   
   If I  use semantics =NON  (default value) ,    the restore process works!
   
   
   sink {
    Kafka {
         plugin_input="fake2"
         topic = topic
         bootstrap.servers = 
"tom-cluster1-kafka-bootstrap.kafka.svc.cluster.local:9092"
         format = json
         kafka.request.timeout.ms = 60000
         semantics = EXACTLY_ONCE
     }
   


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