Github user gdfm commented on the pull request:
https://github.com/apache/flink/pull/1069#issuecomment-137144309
Sure, you can connect multiple containers.
But while the gain you have from going from 1 to 2 is exponential, the gain
from 2 to 3 and forward is just a constant factor. Nevertheless, there might be
datasets with extreme skew for which having more choices is necessary. So I
agree to make it configurable with a default of 2.
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