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Add Jackson 3 support as org.msgpack.jackson3:jackson-dataformat-msgpack by xerial · Pull Request #1012 · msgpack/msgpack-java · GitHub
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Add Jackson 3 support as org.msgpack.jackson3:jackson-dataformat-msgpack #1012

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Add Jackson 3 support as org.msgpack.jackson3:jackson-dataformat-msgpack #1012

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9b818d3
Add msgpack-jackson3 module for Jackson 3.x support
komamitsu May 31, 2026
531d3d0
Document Jackson 2/3 artifact mapping in top-level README
komamitsu Jul 8, 2026
7b7dd8a
Merge remote-tracking branch 'origin/main' into support-jackson3
komamitsu Jul 8, 2026
4f6851a
Bump sbt-jmh to 0.4.8 for sbt 2 compatibility
komamitsu Jul 8, 2026
8ac72a7
Merge branch 'pr-987' into jackson3-migration
xerial Jul 28, 2026
ac96122
Move msgpack-jackson (Jackson 2) to msgpack-jackson2, msgpack-jackson…
xerial Jul 28, 2026
aa8cbfc
Restructure Jackson modules for 1.0.0: Jackson 3 becomes jackson-data…
xerial Jul 28, 2026
3b3ea6a
Pin sbt-jupiter-interface to 0.15.2 for JDK 8 compatibility
xerial Jul 28, 2026
98e90f5
Publish Jackson 3 module under new groupId org.msgpack.jackson3
xerial Aug 10, 2026
32d1c71
Move Jackson 3 JMH benchmarks into a separate unpublished project (#1…
komamitsu Aug 13, 2026
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Pin sbt-jupiter-interface to 0.15.2 for JDK 8 compatibility 
0.17+ upgrades to JUnit 6, which requires Java 17; the JDK 8 CI lane failed
compiling msgpack-jackson2 tests against junit-jupiter-api 6.0.3 (class file
version 61). 0.15.2 stays on JUnit 5.14, and the module's explicit
junit-jupiter 5.14.4 dependency wins resolution. Verified by forking the
tests onto a real JDK 8.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014ZZUaHusAjVx6SNu4sA42s
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@xerial @claude
xerial and claude committed Jul 28, 2026
commit 3b3ea6a9e88bbcc691309e762de8323d41578be5
6 changes: 4 additions & 2 deletions project/plugins.sbt
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Expand Up @@ -7,7 +7,9 @@ addSbtPlugin("com.github.sbt" % "sbt-osgi" % "0.11.0-RC1")
addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.6.2")
addSbtPlugin("com.github.sbt" % "sbt-dynver" % "5.1.1")
addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.8")
// Runs JUnit 5 (Jupiter) tests from sbt; without this, JUnit 5 tests are silently skipped
addSbtPlugin("com.github.sbt.junit" % "sbt-jupiter-interface" % "0.19.0")
// Runs JUnit 5 (Jupiter) tests from sbt; without this, JUnit 5 tests are silently skipped.
// Pinned to 0.15.x: 0.17+ upgrades to JUnit 6, which requires Java 17 and would break
// running msgpack-jackson2 tests on JDK 8.
addSbtPlugin("com.github.sbt.junit" % "sbt-jupiter-interface" % "0.15.2")

scalacOptions ++= Seq("-deprecation", "-feature")
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