Revert "!str filter out elements without demands for Flow#collect operator" #31667
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There are some Flow operators which is doing the pulling on the prestart, seems a general guide should be :Flow/Source should be lazy? |
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I think it needs to be a case-to-case decision, but in general operators should not detach/introduce their own buffers unless that is specifically needed for their logic. |
Thanks for the clarification. @johanandren |
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Reverts #31617
It was a mistake to accept this change for
collect. We didn't realize the full impact and the history that can be read in #18170Actually, it changes the semantics in a way that makes Akka HTTP tests fail https://github.com/akka/akka-http/actions/runs/3249437505/jobs/5331839470
This reverts commit 434c0ab.