Release v3.4.10 · reactor/reactor-core

Reactor-Core 3.4.10 is part of 2020.0.11 Release Train (Europium SR11).

This service release contains bugfixes and polishing changes.

All changes from 3.3.20.RELEASE are also included and these are listed below with an additional level of indentation.

⚠️ Update considerations and deprecations

Flux.replay underlying implementation doesn't support 0-size anymore (which was illogical in the first place)
- For now, the operator transparently translates such calls to Flux.publish() instead (#2741)
Align Mono#share() behavior with Flux#share, split sink impl out (#2756)
- Previously the Disposable obtained by calling mono.share().subscribe() (and that variant only) would terminate/cancel the whole mono.share() for all its subscribers. now this is an individual subscription, much like .subscribe(v -> {}) for instance.
- the old behavior can still be obtained by calling toProcessor() and explicitly turning the source Mono into a MonoProcessor instead of sharing it, although the whole approach is deprecated.

Rework FluxReplay to avoid hanging, but reject 0 size (#2741)
Align Mono#share() behavior with Flux#share, split sink impl out (#2756)
Fix bad switchOnFirst state transition leading to dropped error (#2768)
from 3.3.x:
- [reactor-test] Fix consumeWhile+expectRecorded* skipping signal (#2764)
- In FluxIterable, defer hasNext exceptions from isEmpty to poll to protect against iterators that throw in hasNext (#2766)

Fix onDiscard/onErrorContinue javadoc position in Flux/Mono (#2762)
[doc] remove stray mid-sentence newlines (#2763)
from 3.3.x:
- Document that windows (and groupBy groups) are unicast (#2767, #2568)