Github user pgandhi999 commented on the issue:
https://github.com/apache/spark/pull/22144
@cloud-fan I see a flag supportsPartial which was removed in PR
https://github.com/apache/spark/pull/16461. Is this the flag you were talking
about? If so, I was thinking that we make this flag configurable from the user
end, so it does not change any existing stuff but will create a backward
compatibility for users whose custom UDAF's might not support partial
aggregation like the one in the example mentioned in the PR. Am I thinking in
the right direction? Would really appreciate your guidance in this matter.
Thank you.
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