reactor/reactor-core v3.3.1.RELEASE

on GitHub

Reactor-Core 3.3.1.RELEASE is part of Dysprosium-SR2 Release Train.

It also includes changes from the 3.2.13.RELEASE version.

One important change to pick up for testing Reactor is in StepVerifier: the combination of expectNoEvent followed by thenCancel wasn't working terribly well, and a new better terminal expectation has been introduced: expectTimeout (#1913)

💥 Known issues

• (since 3.3.0.M2) There are regressions with Flux.replay/cache hanging or delivering wrong data (tracked in #2030)

⚠️ Update considerations and deprecations

• #1911 Instrument ScheduledExecutorService via Micrometer
• Instead of doing our own executor decorator we now rely on the Micrometer one, but it might have different coverage of tasks

✨ New features and improvements

• #1557 Removed greediness from FluxBufferTimeout
• #1938 Remove overeager toString calls in FluxIndexFuseable
• #1913 StepVerifier: expectTimeout(Duration) as an alternative to expectNoEvent(Duration).thenCancel()
• #1902 When transform or transformDeferred apply a transformation to a non-Reactor Publisher, warn when/if the original Context is lost (#1888)
• #1966 Internal simplification of how the comparator is applied in collectSortedList
• #1962 Avoid extending Map.Entry in Context1 to ensure various libraries don't represent it inconsistenly when printing out collections of Context
• #1963 Retain insertion order in ContextN (by extending LinkedHashMap instead of HashMap)
• changes from 3.2.13.RELEASE:
  • #1916 Interpret MAX_VALUEms as indefinite caching in Mono#cache(Function, Function, Supplier) (backported)
  • #1746 Add VirtualTimeScheduler#getScheduledTaskCount() (backported)
  • #1968 Make Flux#publish() propagate 1st subscriber Context
  • #1953 Add Exceptions.isTraceback, and a mean to unwrap a composite without the tacebacks (Exceptions.unwrapMultipleExcludingTracebacks)

🪲 Bug fixes

• changes from 3.2.13.RELEASE:
  • #1945 Avoid unnecessary wrapping of exceptions in scalar flatMap
  • #1959 GroupedFlux fused with parallel() not replenishing properly

📖 Documentation, Tests and Build

• [doc] #1908 Marble diagram for bufferWhile was incorrectly showing dropped separators
• [doc] #1915 Flux#join javadoc and marble have been clarified
• [dependency] Bumped BlockHound to the release version (#1923)
• [build] Reorganization of the build with separation of concerns (buildSrc, gradle.properties, etc...) (0bd50de, a1dab8a)
• [build] Add reactor.blockhound to OSGI optional bundles (#1932, #1933)
• [build] Prepare for a releasetrain releaser script: add new tasks, allow mavenLocal source (06977a6, #1960)
• changes from 3.2.13.RELEASE:
  • [build] Switched to Gradle 5.6 (8e97f91)
  • [build] Switched publication plugin to maven-publish and artifactory (#1943)
  • [build] Fixed generation of refguide pdf when custom version is used (2c621b6)
  • [polish] Exceptions.multiple(Iterable) now produces a CompositeException, more test coverage of Exceptions util (#1954)

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

@andreisilviudragnea, @akarnokd, @berry120, @dittos, @EleanorRoseLegg, @gindex, @jabrena, @simondaudin, @slisaasquatch, @thiyagu-7, @ttddyy, @slisaasquatch, @wonwoo