reactor/reactor-core v3.4.25 on GitHub

Reactor-Core 3.4.25 is part of 2020.0.25 Release Train (Europium SR25).

What's Changed

Deprecate scheduler start by @chemicL in #3236
- Scheduler#init() method should be used instead. Restart capability is discouraged and the new method is allowed to throw in case of initializing a disposed instance. Please create a new Scheduler instance when necessary.
- Implementors of Scheduler should also implement the init() method, which currently delegates to start() in the default implementation.

Disable fusion in MonoSubscriber by @UgiR in #3245
- A number of Mono operators derived from the Operators.MonoSubscriber have stopped negotiating fusion (even though their Publisher still implements Fuseable)
- The highest impact is likely to be on tests that validate the fusion negotiation (eg. StepVerifier's expectFusion(...))

Add on discard support for FluxZip/MonoZip by @OlegDokuka in #3209
Optimize Scheduler initialization by @chemicL in #3248
Disable fusion in MonoSubscriber by @UgiR in #3245
Fix breaking change for fromFuture source cancellation by @OlegDokuka in #3252
Add Flux.mergePriority, does not wait for all sources to emit by @osi in #3267
Only initialize logging once per test session by @marcphilipp in #3263
Limit the number of Scheduler#disposeGracefully threads by @simonbasle in #3259

Fix incorrect value/error set during tryEmitXXX call by @OlegDokuka in #3260
Fix subscription loss in FluxTakeUntilOther by @simonbasle in #3270 (fixing a 3.4.24 regression)

Fix flaky FluxPublishOnTest by @simonbasle in #3241
SingleScheduler.isDisposed() only true on disposed instance by @chemicL in #3242
Use new GHA API for setting output, latest core actions by @simonbasle in #3237
Clean up references to fusion in MonoSubscriber comments by @UgiR in #3261
Improve Mono#fromFuture/fromCompletionStage javadocs by @simonbasle in #3272

Full Changelog: v3.4.24...v3.4.25