v4.0.0-alpha-14

What's Changed

• 4.x: Detect un-awaited CompletionStageDisposables during tests by @akarnokd in #8093
• 4.x: Add task coordination primitives, implement a basic concat() operator by @akarnokd in #8110
• Fix Scheduler.toExecutorService() NullPointerException from null worker store by @vasiliy-mikhailov in #8149
• 4.x: Scheduler.toExecutorService(boolean) logic fix by @akarnokd in #8151
• 4.x: Remove Scheduler.when due to maintenance burden by @akarnokd in #8153
• 4.x: +shared, +parallel, +blocking Scheduler by @akarnokd in #8154

Chores

• chore(deps): bump gradle/actions from 6.0.1 to 6.1.0 by @dependabot[bot] in #8095
• chore(deps): bump actions/github-script from 8 to 9 by @dependabot[bot] in #8099
• chore(deps): bump trufflesecurity/trufflehog from 3.94.2 to 3.94.3 by @dependabot[bot] in #8098
• chore(deps): bump SethCohen/github-releases-to-discord from 1.19.0 to 1.20.0 by @dependabot[bot] in #8096
• chore(deps): bump actions/cache from 5.0.4 to 5.0.5 by @dependabot[bot] in #8102
• chore(deps): bump com.google.guava:guava from 33.5.0-jre to 33.6.0-jre by @dependabot[bot] in #8103
• chore(deps): bump actions/upload-artifact from 7.0.0 to 7.0.1 by @dependabot[bot] in #8101
• chore(deps): bump github/codeql-action from 4.35.1 to 4.35.2 by @dependabot[bot] in #8104
• chore(deps): bump trufflesecurity/trufflehog from 3.94.3 to 3.95.2 by @dependabot[bot] in #8105
• chore(deps): bump gradle-wrapper from 9.4.1 to 9.5.0 by @dependabot[bot] in #8106
• chore(deps): bump github/codeql-action from 4.35.2 to 4.35.3 by @dependabot[bot] in #8109
• chore(deps): bump github/codeql-action from 4.35.3 to 4.35.4 by @dependabot[bot] in #8111
• chore(deps): bump gradle-wrapper from 9.5.0 to 9.5.1 by @dependabot[bot] in #8113
• chore(deps): bump trufflesecurity/trufflehog from 3.95.2 to 3.95.3 by @dependabot[bot] in #8112
• chore(deps): bump github/codeql-action from 4.35.4 to 4.35.5 by @dependabot[bot] in #8114
• chore(deps): bump codecov/codecov-action from 6.0.0 to 6.0.1 by @dependabot[bot] in #8115
• test: simplify SingleRetryTest callables by @puneetdixit200 in #8120
• chore(deps): bump github/codeql-action from 4.35.5 to 4.36.0 by @dependabot[bot] in #8121
• chore(deps): bump biz.aQute.bnd.builder from 7.2.3 to 7.3.0 by @dependabot[bot] in #8126
• chore(deps): bump trufflesecurity/trufflehog from 3.95.3 to 3.95.5 by @dependabot[bot] in #8125
• chore(deps): bump actions/checkout from 6.0.2 to 6.0.3 by @dependabot[bot] in #8124
• chore(deps): bump github/codeql-action from 4.36.0 to 4.36.1 by @dependabot[bot] in #8123
• chore(deps): bump github/codeql-action from 4.36.1 to 4.36.2 by @dependabot[bot] in #8127
• chore(deps): bump codecov/codecov-action from 6.0.1 to 7.0.0 by @dependabot[bot] in #8129
• chore(deps): bump gradle/actions from 6.1.0 to 6.1.1 by @dependabot[bot] in #8130
• chore(deps): bump jupiterLauncherVersion from 6.0.3 to 6.1.0 by @dependabot[bot] in #8116
• chore(deps): bump jupiterVersion from 6.0.3 to 6.1.0 by @dependabot[bot] in #8117
• chore(deps): bump gradle/actions from 6.1.1 to 6.2.0 by @dependabot[bot] in #8131
• chore(deps): bump EnricoMi/publish-unit-test-result-action from 2.23.0 to 2.24.0 by @dependabot[bot] in #8132
• chore(deps): bump gradle-wrapper from 9.5.1 to 9.6.0 by @dependabot[bot] in #8134
• chore(deps): bump trufflesecurity/trufflehog from 3.95.5 to 3.95.6 by @dependabot[bot] in #8135
• chore(deps): bump actions/checkout from 6.0.3 to 7.0.0 by @dependabot[bot] in #8136
• chore(deps): bump actions/setup-java from 5.2.0 to 5.3.0 by @dependabot[bot] in #8133
• chore(deps): bump com.vanniktech.maven.publish from 0.36.0 to 0.37.0 by @dependabot[bot] in #8148

Cleanup

• 4.x: Unit test lambdaification 1 of N by @akarnokd in #8137
• 4.x: Unit test lambdaification 2 of N by @akarnokd in #8138
• 4.x: Unit test lambdaification 3 of N by @akarnokd in #8139
• 4.x: Unit test lambdaification 4 of N by @akarnokd in #8140
• 4.x: Unit test lambdaification 5 of N by @akarnokd in #8141
• 4.x: Unit test lambdaification 6 of N by @akarnokd in #8142
• 4.x: Unit test lambdaification 7 of N by @akarnokd in #8143
• 4.x: Unit test lambdaification 8 of N by @akarnokd in #8144
• 4.x: Unit test lambdaification 9 of N by @akarnokd in #8145
• 4.x: Unit test lambdaification 10 of N by @akarnokd in #8146
• 4.x: Unit test lambdaification 11 of N by @akarnokd in #8147
• 4.x: Unit test lambdaification 12 of N by @akarnokd in #8150
• 4.x: Unit test lambdaification 13 of N by @akarnokd in #8152

New Contributors

• @puneetdixit200 made their first contribution in #8120
• @vasiliy-mikhailov made their first contribution in #8149

Full Changelog: v4.0.0-alpha-13...v4.0.0-alpha-14

v4.0.0-alpha-13

What's Changed

• 4.x: Add optional build/test for future JDKs by @akarnokd in #8077
• 4.x: Isolate FlowableMergeTest.synchronizationOfMultipleSequencesLoop by @akarnokd in #8078
• chore(deps): bump codecov/codecov-action from 5.5.3 to 6.0.0 by @dependabot[bot] in #8085
• Fix #8086: Isolate windowUnsubscribeNonOverlappingAsyncSource to JUnit 5 by @ZhangDT-sky in #8087
• chore(deps): bump github/codeql-action from 4.34.1 to 4.35.1 by @dependabot[bot] in #8088
• chore(deps): bump trufflesecurity/trufflehog from 3.94.1 to 3.94.2 by @dependabot[bot] in #8091
• 4.x: Enhance Streamable/Streamer and DisposableContainer APIs by @akarnokd in #8092

New Contributors

• @ZhangDT-sky made their first contribution in #8087

Full Changelog: v4.0.0-alpha-11...v4.0.0-alpha-13

v4.0.0-alpha-12

What's Changed

• 4.x: Add optional build/test for future JDKs by @akarnokd in #8077

Full Changelog: v4.0.0-alpha-11...v4.0.0-alpha-12

v4.0.0-alpha-11

What's Changed

• 4.x: Upgrade to Java 26 baseline compilation, test isolation by @akarnokd in #8074

Full Changelog: v4.0.0-alpha-10...v4.0.0-alpha-11

v4.0.0-alpha-10

What's Changed

• 4.x: Try to fix parallel testng failures by @akarnokd in #8067
• chore(deps): bump biz.aQute.bnd.builder from 7.2.1 to 7.2.3 by @dependabot[bot] in #8073
• chore(deps): bump actions/setup-python from 5.6.0 to 6.2.0 by @dependabot[bot] in #8072
• chore(deps): bump actions/cache from 4.2.4 to 5.0.4 by @dependabot[bot] in #8071
• chore(deps): bump gradle/actions from 205054a7257716ec64af10a2e2ff1ac5d3b132db to 39e147cb9de83bb9910b8ef8bd7fff0ee20fcd6f by @dependabot[bot] in #8068
• chore(deps): bump SethCohen/github-releases-to-discord from 1b3dde6c63d699e660bf6e1b5605217b84d700fe to b96a33520f8ad5e6dcdecee6f1212bdf88b16550 by @dependabot[bot] in #8070
• chore(deps): bump captradeoff/x-post-action from d643d2bb835a1c915a056b2241cbda3c444d016d to 3538d7eeb4e7d50013ed06127f352967967da8c9 by @dependabot[bot] in #8069

Full Changelog: v4.0.0-alpha-9...v4.0.0-alpha-10

v4.0.0-alpha-09

What's Changed

• chore(deps): bump gradle/actions from 5 to 6 by @dependabot[bot] in #8052
• Harden RxJava CI toolchain by @akarnokd in #8055
• Update gradle_release.yml, limit write capabilities of tools by @akarnokd in #8056
• Fix gradle_snapshot.yml - need to checkout/gradle at push too by @akarnokd in #8059
• gradle_snapshot.yml run build -> prerelease sequentially by @akarnokd in #8062
• Cache things with entropy-beauty-scan.yml by @akarnokd in #8064
• 4.x: Report back test failures in a readable manner for PRs/Snaps by @akarnokd in #8066

Full Changelog: v4.0.0-alpha-8...v4.0.0-alpha-9

v4.0.0-alpha-8

What's Changed

• 4.x: Introduce Streamable / Streamer, inspired by C#'s IAsyncEnumerable / IAsyncEnumerator by @akarnokd in #8048
• chore(deps): bump github/codeql-action from 4.33.0 to 4.34.1 by @dependabot[bot] in #8049
• 4.x: Improve Javadocs + limit line length + cleanup indentation + check by @akarnokd in #8050
• 4.x: Introduce Schedulers.virtual(), Schedulers.cached(), deprecate Schedulers.io(), fix tests by @akarnokd in #8051

Full Changelog: v4.0.0-alpha-7-2...v4.0.0-alpha-8

v4.0.0-alpha-7-2

Outdated doc of captradeoff/x-post-action@v1 mislead Grok, the current version is v1.2 😮‍💨.

Full Changelog: v4.0.0-alpha-7-1...v4.0.0-alpha-7-2

v4.0.0-alpha-7-1

Testing release log posting to X.

Full Changelog: v4.0.0-alpha-7...v4.0.0-alpha-7-1

v4.0.0-alpha-7

Fix the remnant org.reactivestreams references in the javadoc. No functional changes.

👉 https://reactivex.io/RxJava/4.x/javadoc/
👉 https://reactivex.io/RxJava/4.x/javadoc/v4.0.0-alpha-7/

( 📓 Please wait for the build & deploy to finish, usually takes 11 minutes. )

Full Changelog: v4.0.0-alpha-6-1...v4.0.0-alpha-7