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Reactor Core v3.4.0-RC2 Release Notes

Release Date: 2020-10-12 // over 4 years ago

  • 🚀 Reactor-Core 3.4.0-RC2 is part of 2020.0.0-RC2 Release Train (codename Europium).

    🚀 This second Release Candidate brings further changes to the Sinks API introduced in M2 and polished in RC1.

    🚀 This release note contains all the changes specific to RC2, as well as some forwarded changes that will be released in 3.3.11.RELEASE.

    ⚡️ ⚠️ Update considerations and deprecations

    • Rework Sinks specs to put unsafe() at root level (#2418)
    • 📇 Rename Emission to EmitResult (#2426)
    • ✂ Remove deprecated emit API (#2377)
    • 🗄 Deprecate [Flux|Mono]Processor contracts entirely (#2431)

    🍱 ✨ New features and improvements

    • ➕ Add emitXxx(EmitFailureHandler) Sinks API (#2377)
    • ➕ Add firstWithValue operator, alias/deprecate first (#2173)
    • VoidProcessor is now a pure empty sink (#2408)
    • ➕ Add serialized wrappers for Sinks.Empty/Sinks.One (#2410)
    • ➕ Add currentSubscriberCount() to Sinks.Many|One|Empty (#2372)
    • 👉 Make sinks scannable for TERMINATED (and CANCELLED) (#2394)
    • ➕ Add directAllOrNothing/directBestEffort multicast Sinks (#2392)
    • 🔄 Change GroupedFlux#key to @NonNull (#2397)

    🍱 🐞 Bug fixes

    • 🛠 Fix concurrent terminal signal detection in SerializedManySink (#2412)
    • 🛠 Fix potential integer overflow on BoundedElasticScheduler constructor (#2389)

    📚 📖 Documentation, Tests and Build

    • correct marbles for transformDeferred (#2358)
    • 🛠 fix windowWithBoundary marble diagram (#2346)
    • 🗄 Don't blanket hide deprecated members in javadoc (#2416)
    • ⬆️ Bump jcstress-gradle-plugin to natively fix jar classifier (#2429)
    • 👉 use a different name for the jcstress jar (#2400)
    • 💅 [polish] Increase timeout duration to 1ms to avoid hiccups
    • 💅 [build] Polish granularity of stacks for Nested tests
    • 💅 [polish] StressSubscriber generified, track onSubscribe, initRequest
    • 💅 [doc] Polish Sinks doc accounting for RC1 and RC2 latest changes (#2414)
    • 💅 [test] Polish tests that use nano durations to avoid flakkyness (#2421)

    🚀 👍 Thanks to the following contributors that also participated to this release

    @camsteffen @yosfik