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From Jaromir Vanek <vanek.jaro...@gmail.com>
Subject Re: Deterministic processing with out-of-order streams
Date Mon, 07 Nov 2016 16:55:20 GMT
Hi Till, thank you for your answer. 

I am afraid defining an allowed lateness won't help. It will just change the
problem by constant time. If we agree an element can come in arbitrary time
after watermark (depends on the network latency), it may be assigned to the
window or may be not if comes before/after allowed lateness period expires.
Then element may be counted in or discarded.

Still seems the results are not deterministic. In other words if I run the
job reading from Kafka multiple times I may get different result depending
on external conditions like network and cluster stability.

Please correct me if i'm wrong.


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