Hi Team,

We are migrating our codebase of flink to V2.1 version. Here were using
dataset jobs which we need to migrate to data stream now and while doing
this we faced an error of parallelism of keyby and window function in our
full outerjoin function which is creating bottleneck for us in case of disk
storage and compute

The code structure

We have 2 inputs db2stream and kafka input on which we perform outerjoin
function

Db2Stream.keyby(key selector)
.cogroup(kafka input)
.where(key)
.equalto(key)
.window(endOfStreamWindow.get)
.apply(<join function>)


Can you  please help me with increasing  Parallelism of this function in
anyway so that we can remove our bottleneck while migrating it from dataset
to datastream

Thanks,
Sambhav Gupta

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