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fix: concat/merge operators will finalize inners before moving to the next #6010

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benlesh
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@benlesh benlesh commented Feb 9, 2021

Resolves an issue where inner observables would not finalize before the next inner observable got subscribed to. This happened in concat variants, and merge variants with concurrency limits, and could be surprising behavior to some users.

fixes #3338

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Resolves an issue where inner observables would not finalize before the next inner observable got subscribed to. This happened in concat variants, and merge variants with concurrency limits, and could be surprising behavior to some users.

fixes ReactiveX#3338
@benlesh
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benlesh commented Feb 9, 2021

This PR is also an example of why I don't really want to release OperatorSubscriber yet. I had to change a feature of it to make this work properly.

@cartant
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cartant commented Feb 9, 2021

This PR is also an example of why I don't really want to release OperatorSubscriber yet. I had to change a feature of it to make this work properly.

It's a beta, so it could have been changed even if it had been released, IMO.

@benlesh benlesh merged commit 5249a23 into ReactiveX:master Feb 10, 2021
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concatAll() unexpectedly overlaps inner Observable subscriptions
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