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From tambunanw <if05...@gmail.com>
Subject Flink Streaming : PartitionBy vs GroupBy differences
Date Fri, 03 Jul 2015 08:09:49 GMT
Hi All, 

I'm trying to digest what's the difference between this two. From my
experience in Spark GroupBy will cause shuffling on the network. Is that the
same case in Flink ? 

I've watch videos and read a couple docs about Flink that's actually Flink
will compile the user code into it's own optimized graph structure so i
think Flink engine will take care of this one ?

>From the docs for Partitioning

http://ci.apache.org/projects/flink/flink-docs-master/apis/streaming_guide.html#partitioning

Is that true that GroupBy is more advanced than PartitionBy ? Can someone
elaborate ? 

I think this one is really confusing for me that come from Spark world. Any
help would be really appreciated. 

Cheers 





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