Hi All,

I noticed if one of the slot's watermark not progressing, its impacting all 
slots processFunction timer and no timer are not firing. 

In my example, I have Source parallelism set to 8 and Kafka partition is 4. The 
next operator is processFunction with parallelism of 8 +  event timer. I can 
see from the debug log that one of the slot's watermark is not progressing. As 
a result, all slot's timer in the process function are not firing. Is this 
expected behavior or issue? How do I prevent this condition?

Thanks,
Fritz

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