2025

Open Source Diary of @cowtowncoder: 2025

This is my (incomplete) public record of Open Source activities for year of 2025, when I worked first at DataStax.com and then at IBM (after acquisition of DataStax).

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2025

January

• 2025-01-02 (thu): Implemented https://github.com/FasterXML/jackson-core/issues/1378 -- JsonParser.getText() to .getString() (etc)
• 2025-01-03 (fri): Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/541 -- SmileParser.getValueAsString()
• 2025-01-04 (sat)
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/542 -- fix for Avro Decimal type (de)serialization, schema generation
  • Merged https://github.com/FasterXML/jackson-databind/pull/4882 -- Remove "spliterator" methods recently added (turn out not useful without iterators)
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/544 -- Enabled Avro Logical Type support by default in 3.0.
  • Merged https://github.com/FasterXML/jackson-jaxrs-providers/pull/205 -- JAX-RS, pretty-printer configuration
  • Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/31 -- CSV, trimming in Header row
• 2025-01-05 (sun) Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/422 -- Avro Schema generation, Enums, invalid chars
• 2025-01-06 (mon)
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/539 -- Avro 1.11.4 upgrade
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4858 -- default for DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES
• 2025-01-07 (tue): Implemented https://github.com/FasterXML/jackson-databind/issues/3522 -- Serialize ByteArrayOutputStream (3.0)
• 2025-01-08 (wed)
  • Follow-up on https://github.com/FasterXML/jackson-databind/issues/4858 -- missed actual default change to FAIL_ON_NULL_FOR_PRIMITIVES
  • Start https://github.com/FasterXML/jackson-core/pull/1381 -- module-info.java for jackson-core
  • Start on https://github.com/FasterXML/jackson-databind/issues/4891 -- module-info for jackson-databind
• 2025-01-10 (fri): Completed https://github.com/FasterXML/jackson-core/pull/1381 -- module-info.java for jackson-core
• 2025-01-11 (sat)
  • Merged a few test PRs by Joo-Hyuk
  • Fixed https://github.com/FasterXML/jackson-annotations/issues/272 -- jackson-annotations to JDK 17
  • Fixed https://github.com/FasterXML/jackson-annotations/issues/274 -- jackson-annotations use module-info.java
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4891 -- jackson-databind, module-info.java
  • Fixed https://github.com/FasterXML/jackson-dataformat-xml/issues/701 -- jackson-dataformat-xml, module-info.java
  • Merged https://github.com/FasterXML/jackson-core/pull/1386 -- jackson-core test-jar
  • Merged https://github.com/FasterXML/jackson-dataformats-text/pull/527 -- TOML tests to JUnit5
  • Merged https://github.com/FasterXML/jackson-dataformats-text/pull/528 -- YAML tests to JUnit5
• 2025-01-12 (sun)
  • Merged https://github.com/FasterXML/jackson-dataformats-text/pull/526 -- Properties tests to JUnit5
  • Merged https://github.com/FasterXML/jackson-dataformats-text/pull/525 -- CSV tests to JUnit5
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/551 -- Ion tests to JUnit5
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/552 -- Protobuf tests to JUnit5
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/549 -- Avro tests to JUnit5
• 2025-01-13 (mon)
  • Mark https://github.com/FasterXML/jackson-core/issues/1385 as fixed -- create separate core-test-support artifact for test code reuse
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/550 -- CBOR tests to JUnit5
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/553 -- Smile tests to JUnit5
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/556 -- "failing" to "tofix" tests
• 2025-01-14 - 2024-01-23:
  • Worked on JSTEP-11 (module-info.java) and merging JSTEP-10 (JUnit5) PRs -- but forgot to update here
• 2025-01-24 (fri): Fixed https://github.com/FasterXML/jackson-databind/issues/4896 -- Enum with JsonProperty("")
• 2025-01-25 (sat)
  • Merged https://github.com/FasterXML/jackson-datatypes-misc/pull/54 -- JUnit5 for datatypes-misc
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4908 -- @JsonCreator vs @ConstructorProperties
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4922 -- @JsonMerge with custom Maps
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4878 -- NPE on StdConvertingSerializer, Map
• 2025-01-26 (sun)
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4444 -- custom Map key deser
  • Merged https://github.com/FasterXML/jackson-core/pull/1391 -- fix for "sticky" number parsing
• 2025-01-27 (mon)
  • Merge Dependabot upgrades to Codecov plug-in versions
  • Work on https://github.com/FasterXML/jackson-modules-java8/issues/339 -- Java 8 modules to JUnit5 conversion
• 2025-01-28 (tue)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4932 -- Conversion of MissingNode throws
  • Merged fix for https://github.com/FasterXML/jackson-modules-java8/issues/337 -- Period, bad offset for negative values
• 2025-01-29 (wed)
  • FINALLY merged https://github.com/FasterXML/jackson-databind/pull/4902/ -- DeserializationFeature.FAIL_ON_TRAILING_TOKENS enabled in 3.0
  • Merged https://github.com/FasterXML/jackson-databind/pull/4942 -- revert use of shared "jackson-core" test-jar due to problems
• 2025-01-30 (thu)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4934 -- null handling for DeserializationContext.readXxx() calls
  • Wrote https://github.com/FasterXML/jackson-future-ideas/discussions/80 -- "Path to Jackson 3.0.0-rc1"
• 2025-01-31 (fri)
  • Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/561 -- extra END_OBJECT for Protobuf (found via "fail on trailing tokens" default change)
  • Merged https://github.com/FasterXML/jackson-databind/pull/4944 -- Disable WRITE_DURATIONS_AS_TIMESTAMPS by default
  • Fixed https://github.com/FasterXML/jackson-core/issues/1394 -- bad error for unmatch end Array or end Object

February

• 2025-02-02 (sun) Completed https://github.com/FasterXML/jackson-jr/issues/184 -- JUnit5 for jackson-jr
• 2025-02-03 (mon)
  • Merged https://github.com/FasterXML/jackson-jr/pull/187 -- jackson-jr 3.0 to use module-info.java directly
  • Merged https://github.com/FasterXML/jackson-modules-base/pull/282 -- Fix incorrect SPI wrt Services
  • Fixed https://github.com/FasterXML/jackson-modules-base/issues/284 -- Remove shading of Afterburner from 3.0
• 2025-02-04 (tue)
  • Merged https://github.com/FasterXML/woodstox/pull/221 -- Woodstox name char perf optimization
  • Merged https://github.com/FasterXML/jackson-core/pull/1400 -- Continuation of Number state problems pre-2.19
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4845 -- Change SerializationFeature.WRITE_DATES_AS_TIMESTAMPS default to false in 3.0
• 2025-02-05 (wed)
  • Merged fix for https://github.com/FasterXML/jackson-core/issues/1398 -- UTF-8 Surrogates, custom char escaping
  • Fixed https://github.com/FasterXML/jackson-modules-java8/issues/355 -- Java 8 date/time: Year serialization as number
  • Fixed test failures of https://github.com/FasterXML/jackson-modules-java8/ for master (3.0) after defaults changes
  • Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/300 -- Smile float encoding MSBs
• 2025-02-06 (thu)
  • Merged fix for https://github.com/FasterXML/jackson-modules-java8/issues/342: Lenient deserialization of LocalDate, LocalDateTime is not time-zone aware
  • Fixed https://github.com/FasterXML/jackson-core/issues/1401 -- Rename TreeNode.isContainerNode() as isContainer() (3.0)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4956 -- Rename JsonNode.isContainerNode()
• 2025-02-07 (fri): Merged fix for https://github.com/FasterXML/jackson-databind/issues/4953 -- add ObjectMapper.clearCaches()
• 2025-02-08 (sat)
  • Merged https://github.com/FasterXML/jackson-databind/pull/4959 -- fix deser for ThreadGroup
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4963 -- Map.Entry as POJO serialization (JDK types) on JDK 17
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4388 -- Allow using @JsonPropertyOrder with "any" (@JsonAnyGetter) properties
• 2025-02-09 (sun)
  • Merged https://github.com/FasterXML/jackson-databind/pull/4965 -- move now-passing tests from "tofix"
  • Fix https://github.com/FasterXML/jackson-databind/issues/4961 -- @JsonAnyGetter and JsonFormat.Shape.ARRAY for POJOs
• 2025-02-10 (mon) Fixed https://github.com/FasterXML/jackson-databind/issues/4955 -- Add remove-methods for ArrayNode, ObjectNode
• 2025-02-11 (tue)
  • Fixed issues with https://github.com/FasterXML/jackson-dataformats-binary/pull/565 -- CBOR/Smile test for numbers
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/388 -- Avro, Enum default value for Schema
• 2025-02-13 (thu)
  • Merged https://github.com/FasterXML/jackson-databind/pull/4972 -- fix JaCoCo for JDK 17
  • Merged https://github.com/FasterXML/jackson-databind/pull/4973 -- remove deprecated, unused UntypedObjectDeserializer.Vanilla
• 2025-02-14 (fri) Merged fix fox https://github.com/FasterXML/jackson-databind/issues/4771 -- QName (de)serialization as Object
• 2025-02-24 (mon):
  • Merged https://github.com/FasterXML/jackson-dataformats-text/pull/537 -- SnakeYAML 2.4
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4920 -- Abstract types' Creator properties skipped
• 2025-02-26 (wed): Fixed https://github.com/FasterXML/jackson-databind/issues/4992 -- Rename JsonNodeFactory.textNode() as .stringNode()
• 2025-02-28 (fri):
  • Merged fix for https://github.com/FasterXML/jackson-datatype-hibernate/issues/180 -- Hibernate JUnit5 upgrade
  • Merged https://github.com/FasterXML/jackson-datatype-hibernate/pull/179 -- Update Hibernate deps to later/-st (fix tests)
  • GMM update PRs:
    • https://github.com/FasterXML/jackson-annotations/pull/281
    • https://github.com/FasterXML/jackson-core/pull/1407/
    • https://github.com/FasterXML/jackson-databind/pull/4998
    • https://github.com/FasterXML/jackson-jr/pull/190
    • https://github.com/FasterXML/jackson-modules-base/pull/287
    • https://github.com/FasterXML/jackson-dataformats-binary/pull/566
    • https://github.com/FasterXML/jackson-dataformats-text/pull/547
    • https://github.com/FasterXML/jackson-dataformat-xml/pull/722
    • https://github.com/FasterXML/jackson-modules-java8/pull/361
    • https://github.com/FasterXML/jackson-module-jsonSchema/pull/164
    • https://github.com/FasterXML/jackson-datatypes-collections/pull/181
    • https://github.com/FasterXML/jackson-datatypes-misc/pull/55
    • https://github.com/FasterXML/jackson-datatype-joda/pull/158
    • https://github.com/FasterXML/jackson-datatype-hibernate/pull/182
    • https://github.com/FasterXML/jackson-module-kotlin/pull/918
    • https://github.com/FasterXML/jackson-jaxrs-providers/pull/211
    • https://github.com/FasterXML/jackson-jakarta-rs-providers/pull/48

March

• 2025-03-03 (mon): Completed https://github.com/FasterXML/jackson-databind/issues/4958 -- JsonNode.intValue() etc
• 2025-03-04 (tue)
  • Merged https://github.com/FasterXML/jackson-modules-java8/pull/362 -- InstantDeserializer, pre-1970 times
• 2025-03-05 (wed)
  • XML defaults changes:
    • https://github.com/FasterXML/jackson-dataformat-xml/pull/726 -- Change XML write config defaults for XmlWriteFeature.UNWRAP_ROOT_OBJECT_NODE
    • https://github.com/FasterXML/jackson-dataformat-xml/issues/727 -- Change XmlWriteFeature.WRITE_NULLS_AS_XSI_NIL default to true
    • https://github.com/FasterXML/jackson-dataformat-xml/issues/728 -- Change XmlWriteFeature.AUTO_DETECT_XSI_TYPE default to true
    • https://github.com/FasterXML/jackson-dataformat-xml/issues/729 -- Change XmlWriteFeature.WRITE_XML_SCHEMA_CONFORMING_FLOATS default to true
  • Merged https://github.com/FasterXML/jackson-core/pull/1411 -- JsonFactory.builderWithJackson2Defaults()
• 2025-03-06 (thu)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5004 -- JsonMapper.builder() with Jackson 2.x defaults
  • Merged fix for https://github.com/FasterXML/jackson-dataformat-xml/issues/732 -- Change XmlReadFeature.AUTO_DETECT_XSI_TYPE default to true
  • Merged https://github.com/FasterXML/jackson-dataformat-xml/pull/731 -- https://github.com/FasterXML/jackson-dataformat-xml/pull/731
  • Merged https://github.com/FasterXML/jackson-databind/pull/5007 -- Add/Change JsonNode.stringValue()
• 2025-03-07 (fri)
  • Jackson 3.0.0-rc1 released !!!
  • Merged fix for https://github.com/FasterXML/jackson-modules-base/issues/285 -- BlackBird, Groovy script
• 2025-03-08 (sat) Merged https://github.com/FasterXML/jackson-modules-base/pull/292 -- fix to BlackBird, Groovy script test
• 2025-03-11 (tue)
  • Merged https://github.com/FasterXML/jackson-modules-base/pull/291 -- Paranamer 2.8.3
  • Merged https://github.com/FasterXML/jackson-annotations/pull/285 -- Added @JsonProperty.isRequired
• 2025-03-12 (wed)
  • Fix https://github.com/FasterXML/jackson-databind/issues/4650 -- Primitive array deser from String value
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4915 -- Access Attributes from Converter
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5006 -- MapperFeature to allow java.util.Optional ser/deser without module
• 2025-03-13 (thu) Merged https://github.com/FasterXML/jackson-databind/pull/4979 -- Default enum for @JsonCreator
• 2025-03-14 (fri) Merged https://github.com/FasterXML/jackson-databind/pull/4948 -- Allow nulls from @JsonCreator
• 2025-03-17 (mon)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5025 -- Support for "sealed" sub-types.
  • Merged https://github.com/FasterXML/jackson-bom/pull/90 -- Fix for Woodstox version dep via bom.
• 2025-03-18 (tue)
  • Merged https://github.com/FasterXML/jackson-dataformat-xml/pull/741 -- Remove Woodstox version from XML module (now via bom)
  • Merged https://github.com/FasterXML/jackson-core/pull/1413 -- tests for Async parser location (failing)
• 2025-03-19 (wed)
  • Work on https://github.com/FasterXML/jackson-integration-tests -- trying to make main work, almost succeeding (fixing 2.19 too)
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/570 -- Incorrect long overflow for Ion
  • Merged https://github.com/FasterXML/jackson-datatypes-misc/pull/48 -- Two new "misc datatype" Modules -- javax-money and moneta
• 2025-03-21 (fri) https://github.com/FasterXML/jackson-databind/pull/5042 -- Improve JsonNode.asBoolean(), JsonNode.asString()
• 2025-03-25 (tue) Finally completed https://github.com/FasterXML/jackson-databind/issues/5003 -- Extend, improve set of JsonNode.asXxx() methods for number types
• 2025-03-27 (thu)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5052 -- Minor bug in first-char-based name validator
  • Fixed https://github.com/FasterXML/jackson-databind/issues/2882 -- Tighter naming rules for getters/setters
• 2025-03-28 (fri): 3.0.0-rc2 Release!
• 2025-03-29 (sat)
  • Merged fix for https://github.com/FasterXML/jackson-datatype-joda/issues/160 -- Joda Days serialization
  • Merged fix for https://github.com/FasterXML/jackson-modules-java8/issues/364 -- Month deser from "12" failing
• 2025-03-30 (sun)
  • Merged fix for https://github.com/FasterXML/jackson-core/issues/633 -- Allow skipping RS CTRL-CHAR to support JSON Text Sequences
  • Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/554 -- CsvSchema immutability
  • Merged https://github.com/FasterXML/jackson-databind/pull/5027 -- Allow limiting sub-classes wrt type ids
• 2025-03-31 (mon)
  • Merged https://github.com/FasterXML/jackson-datatype-joda/pull/164 -- Yet more Day/Week/etc Serializers

April

• 2025-04-01 (tue): Merged fix for https://github.com/FasterXML/jackson-databind/issues/4801 -- JsonNodeFeature.USE_BIG_DECIMAL_FOR_FLOATS
• 2025-04-04 (fri): Merged https://github.com/FasterXML/jackson-databind/pull/5032 -- move JSR-310 (Java Time) module into jackson-databind
• 2025-04-05 (sat): Merged https://github.com/FasterXML/jackson-databind/pull/5069 -- copy-constructor for MappingIterator
• 2025-04-05 (sun):
  • Merged https://github.com/FasterXML/jackson-module-kotlin/pull/938 -- Fix Kotlin module 3.0 wrt Java Time module
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5049 -- Records, @JsonCreator, property rename
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/568 -- CBOR ASCII Decoding perf improvement
  • (REVERTED) Merged https://github.com/FasterXML/jackson-databind/pull/5046 -- use MethodHandles instead of Reflection API
• 2025-04-06 (mon)
  • Reverted ^^^ https://github.com/FasterXML/jackson-databind/pull/5046 -- use MethodHandles instead of Reflection
  • Merged https://github.com/FasterXML/oss-parent/pull/196/ -- jacoco-plugin version update
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5063 -- SimpleModule with "unknown version"
  • Merged https://github.com/FasterXML/jackson-core/pull/1417 -- fix for infinite loop with Async parser
  • Jackson 2.19.0-rc2 released! (rc1 release failed due to fat fingering, not noticing error)
• 2025-04-06 (tue)
  • Completed "master"->"3.x" part of https://github.com/FasterXML/jackson-future-ideas/wiki/JSTEP-12
  • Fix https://github.com/FasterXML/jackson-databind/issues/5065 -- defaults for "One-based Month [de]serializer"
• 2025-04-07 (wed)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/3343 -- make BeanPropertyWriter.get() non-final
  • Resolved https://github.com/FasterXML/jackson-databind/issues/2135 -- @JsonCreator usage question
  • Resolved https://github.com/FasterXML/jackson-databind/issues/3210 -- another @JsonCreator usage question
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5066 -- SerializationFeature, date/time, to DateTimeFeature
• 2025-04-08 (thu)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5067 -- DeserializationFeature, date/time, to DateTimeFeature
  • Merged https://github.com/FasterXML/jackson-datatypes-misc/pull/57 -- Use module-info for jackson-datatype-javax-money
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4628 -- Record, @JsonCreator, @JsonIgnore
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4603 -- No unwrapping of root cause
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5080 -- SerializationFeature to EnumFeature
• 2025-04-09 (fri)
  • Merged https://github.com/FasterXML/jackson-modules-base/pull/295 -- Minor clean up for Afterburner in 3.0
  • Merged https://github.com/FasterXML/jackson-databind/pull/5088 -- DeserializationFeature to EnumFeature
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/571 -- IonValue, nulls
  • Completed https://github.com/FasterXML/jackson-module-kotlin/pull/888 -- Kotlin module to use module-info.java (JPMS)
• 2025-04-13 (sun): Released 3.0.0-rc3!
• 2025-04-14 (mon): Completed https://github.com/FasterXML/jackson-databind/issues/5093 -- Lazy BeanDescription access for serializers
  • ... and fixed downstream problems
• 2025-04-15 (tue)
  • Merged https://github.com/FasterXML/jackson-dataformat-xml/pull/745 -- XML declaration with "standalone='yes'"
  • Implemented https://github.com/FasterXML/jackson-databind/issues/5094 -- Lazy BeanDescription for deserializers
    • and downstream module changes too
• 2025-04-16 (wed): Merged passing test for https://github.com/FasterXML/jackson-dataformat-xml/issues/508 -- marker as fixed in 2.19 (but probably worked in 2.18.x at least)
• 2025-04-18 (fri): Wrote https://github.com/FasterXML/smile-format-specification/issues/21 -- Update spec wrt Skipped Refs
• 2025-04-21 (mon)
  • Blog post: https://medium.com/@cowtowncoder/waiting-for-jackson-2-19-0-e2af6bbad369
  • Fixed https://github.com/FasterXML/jackson-dataformat-xml/issues/714 -- XML root null, trailing token(s)
• 2025-04-22 (tue)
  • Merged fix https://github.com/FasterXML/jackson-databind/pull/5099 -- Regression for deprecated ObjectNode.with()
  • Answered https://github.com/FasterXML/jackson-databind/issues/5100 -- Access to JsonLocation.rawContent()
• 2025-04-24 (thu)
  • Merged https://github.com/FasterXML/jackson-core/pull/1423 -- make JsonReadContext non-final
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4533 -- MapperFeature to control failure for Java 8 date/time ser/deser without handlers
  • Jackson 2.19.0 release!!!
• 2025-04-25 (fri)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5110 -- missing ObjectMapper.createNonBlockingByteBufferParser()
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5112 -- missing ObjectMapper.findAndAddModules(ClassLoader) variant
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4136 -- remove deprecated PropertyNamingStrategy impls
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5111 -- Add TokenBuffer taking methods in ObjectMapper, ObjectReader
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5103 -- Pass size to writeStartObject() of ObjectNode
• 2025-04-27 (sun)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5124 -- Refactor Month[De]Serializer to not be based on Enum[De]Serializer
• 2025-04-28 (mon)
  • Fixed https://github.com/FasterXML/jackson-core/issues/1425 -- JsonPointer crash on 2.19.0
  • JSTEP-14 (SBOM generation work)
    • https://github.com/FasterXML/jackson-bom/pull/96
    • https://github.com/FasterXML/jackson-annotations/pull/290
    • https://github.com/FasterXML/jackson-core/pull/1427
    • https://github.com/FasterXML/jackson-databind/pull/5129
• 2025-04-29 (tue)
  • More JSTEP-14 work; modules-base, dataformats
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/431 -- CBOR encoding of negative BigIntegers.
• 2025-04-30 (wed)
  • Performance benchmarking to be able to merge https://github.com/FasterXML/jackson-databind/pull/4885 -- DEFAULT_VIEW_INCLUSION default to false
  • Find and fix https://github.com/FasterXML/jackson-dataformats-binary/issues/584 -- Protobuf, missing END_OBJECT
  • https://github.com/FasterXML/jackson-modules-java8/pull/368 -- JSTEP-14: SBOM generation

May

• 2025-05-01 (thu) JSTEP-14: f.ex, https://github.com/FasterXML/jackson-datatype-hibernate/pull/183
• 2025-05-02 (fri)
  • JSTEP-14: f.ex https://github.com/FasterXML/jackson-module-kotlin/pull/977
  • Merged https://github.com/FasterXML/jackson-annotations/pull/291 -- @JacksonInject.optional
• 2025-05-03 (sat) Merged https://github.com/FasterXML/jackson-databind/pull/5140 -- Null checks sometimes skipped for Collection values
• 2025-05-05 (mon)
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/137 -- expose "undefined" as JsonToken.VALUE_EMBEDDED_OBJECT
  • Merged fix for https://github.com/FasterXML/jackson-datatype-joda/issues/98 -- JsonFormat.timezone getting overwritten
  • Merged https://github.com/FasterXML/jackson-modules-java8/pull/369 -- Additional tests
• 2025-05-06 (tue)
  • Merged https://github.com/FasterXML/jackson-datatype-joda/pull/169 -- DateTime serialization, TZ
  • Jackson 2.18.4 release!
• 2025-05-08 (thu)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5138 -- 3.0, JsonNode.asFloat(), .asShort()
  • Fixed https://github.com/FasterXML/jackson-module-scala/pull/729 -- Scala module wrt databind change for ClassIntrospector
• 2025-05-09 (fri)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5090 -- Big MethodHandle PR!
  • Merged https://github.com/FasterXML/jackson-databind/pull/5131 -- @JacksonInject.optional PR
• 2025-05-10 (sat)
  • Jackson 3.0.0-rc4 release!
  • Merged https://github.com/FasterXML/jackson-databind/pull/5153 -- POJONode number coercion improvements
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/590 -- CBOR Simple value exposure
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5151 -- new annotation for failed @JacksonInject.
  • Blog post about RC4: https://cowtowncoder.medium.com/jackson-3-0-0-rc4-2e6b50bae398
• 2025-05-12 (mon)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5158 -- Add "optional" variants -- shortValueOpt(), floatValueOpt(), asShortOpt(), asFloatOpt()
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/582 -- Defaults for BigInt encode/decode
• 2025-05-15 (thu)
  • Fixed https://github.com/FasterXML/jackson-bom/issues/99 -- Remove managed Woodstox/stax2-api deps
  • Merged https://github.com/FasterXML/jackson-bom/pull/102 -- fix for Woodstox/stax2-api prop names
• 2025-05-17 (sat)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4656 -- DeserializationProblemHandler cast
  • Merged https://github.com/FasterXML/jackson-datatype-joda/pull/172 -- Sync with changes from ^^^
  • Merged https://github.com/FasterXML/jackson-modules-java8/pull/370 -- Sync with changes from ^^^
• 2025-05-19 (mon): Merged https://github.com/FasterXML/jackson-datatypes-misc/pull/67 -- Fix jackson-datatypes-misc SPI (wrong package name)
• 2025-05-20 (tue)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5169 -- Serializers missing callbacks
  • Merged https://github.com/FasterXML/jackson-databind/pull/5166 -- tests for "iPhone" problem
  • Fixed https://github.com/FasterXML/jackson-databind/issues/4907 -- Reduce/eliminate introspection for "java.*" types
• 2025-05-22 (thu)
  • 3.0.0-rc5 release!!!
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/593 -- Fix for Avro#589 -- should add base type in union
• 2025-05-27 (tue)
  • Complete 2.x conversion of CI to new Sonatype Central Portal publishing
  • Merged fix for https://github.com/FasterXML/jackson-datatypes-collections/issues/185 -- Guava ImmutableList, ACCEPT_SINGLE_AS_ARRAY
• 2025-05-28 (wed)
  • Merged https://github.com/FasterXML/woodstox/pull/229 -- switch Woodstox to Sonatype Central Portal publishing
  • Woodstox 7.1.1 release! (via Sonatype Central Portal)
  • Merged https://github.com/cowtowncoder/java-uuid-generator/pull/131 -- switch JUG to Sonatype Central Portal publishing
  • Fixed https://github.com/FasterXML/jackson-core/issues/1433 -- Javadocs for JsonParser.getNumberType()
• 2025-05-29 (thu)
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/595 -- CBOR, Smile tests wrt core#1433 (see above)
  • Fixed https://github.com/FasterXML/jackson-core/issues/1434 -- JsonParser.getNumberType() to return null for non-Number in 3.0
• 2025-05-30 (fri)
  • Fixed https://github.com/FasterXML/jackson-core/issues/1438 -- ParserBase.close() needs to clear _currToken
  • Implemented https://github.com/FasterXML/jackson-databind/issues/5179 -- Current token via MismatchedInputException
  • Implemented https://github.com/FasterXML/jackson-core/pull/1442 -- Add StreamReadFeature.CLEAR_CURRENT_TOKEN_ON_CLOSE
• 2025-05-31 (sat)
  • Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/564 -- CsvParser, getNumberValue() not failing for non-number tokens

June

• 2025-06-01 (sun): Merged https://github.com/FasterXML/jackson-dataformats-text/pull/566 -- Fix JavaPropertiesParser wrt getNumberType(), close()
• 2025-06-02 (mon): Merged https://github.com/FasterXML/jackson-dataformats-text/pull/567 -- Fix YAMLParser.getNumberType(), close()
• 2025-06-09 (mon)
  • Merged https://github.com/FasterXML/jackson-core/pull/1447 -- fix for [jackson-core#1446], FastDoubleParser vs Android
  • Completed https://github.com/FasterXML/jackson-core/issues/1420 -- document all jackson-core Features in Wiki.
  • Added test for https://github.com/FasterXML/jackson-dataformats-binary/issues/599 (exception on skipped StringRef)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5183 -- test for Record, @JsonUnwrapped
  • Merged https://github.com/FasterXML/jackson-databind/pull/5185 -- test for Record, @JsonIgnore on getter method
• 2025-06-10 (tue): Released jackson-core 2.18.4.1 micro-patch: https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.18.4.1
• 2025-06-11 (wed): Merged https://github.com/FasterXML/jackson-core/pull/1448 -- FastDoubleParser 2.0.1 update
• 2025-06-17 (tue): Merged https://github.com/FasterXML/jackson-databind/pull/5195 -- ClassUtil.isRecord() rewrite
• 2025-06-18 (wed): Merged https://github.com/FasterXML/jackson-databind/pull/5197 -- better Exception message for Record, @JsonBackReference.
• 2025-06-19 - 2025-06-30: VACATION!

July

• 2025-07-01 - 2025-07-06: VACATION!
• 2025-07-07: (mon)
  • Updated https://github.com/FasterXML/jackson-core/pull/943 description with filed CVE-2025-52999
  • Fixed https://github.com/FasterXML/jackson-jr/pull/199 -- jackson-jr, deser long[]
  • Merged Dependabot PRs for https://github.com/FasterXML/oss-parent/, re-build, released (for Central Portal publishing plug-in updates)
• 2025-07-09 (wed)
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5215 -- @JsonAnyGetter serialization order change
  • Merged https://github.com/FasterXML/jackson-datatype-hibernate/pull/186 -- Hibernate 6 fixes
  • Merged https://github.com/FasterXML/jackson-datatype-hibernate/pull/185 -- Hibernate 7 support
  • Merged https://github.com/FasterXML/jackson-databind/pull/5202 -- JsonSetter.contentNulls ignored for Object[], String[] and Collection<String>
  • Merged https://github.com/FasterXML/jackson-databind/pull/5220 -- fix custom Throwable serialization issue
• 2025-07-10 (thu)
  • Merged https://github.com/FasterXML/jackson-annotations/pull/295 -- Drop patch number from jackson-annotations release
  • Merged https://github.com/FasterXML/jackson-annotations/pull/297 -- Drop Java 6 compatibility
• 2025-07-11 (fri)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5198/ -- test for custom BigDecimal
  • Merged https://github.com/FasterXML/jackson-jakarta-rs-providers/pull/55 -- fix for PrettyPrinter statefulness problem
• 2025-07-14 (mon)
  • Fixed https://github.com/FasterXML/jackson-annotations/issues/293 -- Error message for ObjectId collision
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/603/ -- CBOR, write unsigned numbers
• 2025-07-15 (tue)
  • Merged https://github.com/FasterXML/jackson-bom/pull/106 -- Gradle Module Metadata (gmm) plug-in upgrade
  • Merged fix for https://github.com/FasterXML/jackson-dataformat-xml/issues/768 -- FromXmlParser extension point
• 2025-07-16 (wed): Fixed https://github.com/FasterXML/jackson-databind/issues/5225 -- UUID to tree, 3.x, NPE
• 2025-07-17 (thu):
  • #158: Increase minimum supported Guava from 20.x to 22.x for Jackson 2.20
• 2025-07-18 (fri):
  • Released Jackson 2.19.2
  • Released Jackson 3.0.0-rc6
• 2025-07-21 (mon): Merged https://github.com/FasterXML/jackson-bom/pull/108 -- drop Scala 2.11 support from Jackson 3.x
• 2025-07-24 (thu): Merged https://github.com/FasterXML/jackson-core/pull/1456 -- revert of default for JsonWriteFeature.ESCAPE_FORWARD_SLASHES
• 2025-07-25 (fri)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5235 -- Fix MethodHandle problem with varargs.
  • Fixed https://github.com/FasterXML/jackson-modules-java8/issues/372 -- java.util.Optional deser fails
• 2025-07-26 (sat): Merged fix for https://github.com/FasterXML/jackson-databind/issues/5152 -- "iPhone" properties support
• 2025-07-29 (tue): Merged https://github.com/FasterXML/jackson-dataformats-text/pull/569 -- snakeyaml-engine 2.10 upgrade
• 2025-07-31 (thu): Merged https://github.com/FasterXML/jackson-annotations/pull/301 -- @JsonFormat Javadocs

August

• 2025-08-04 (mon): Jackson 2.20.0-rc1 release
• 2025-08-06 (wed): Merged https://github.com/FasterXML/jackson-databind/pull/5249 -- "Packed Binary Vector" support
• 2025-08-07 (thu): Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/497 -- YAML part (CSV fixed earlier), wrt UTF-8 decoding
• 2025-08-08 (fri): Jackson 3.0.0-rc7 release
• 2025-08-11 (mon)
  • Merged https://github.com/FasterXML/jackson-core/pull/1460 -- Completed botched change of JsonWriteFeature.ESCAPE_FORWARD_SLASHES
    • Merged https://github.com/FasterXML/jackson-jr/pull/202 -- sync with changes from ^^^ wrt jackson-jr tests
    • Merged https://github.com/FasterXML/jackson-datatypes-misc/pull/72 -- sync with changes from ^^^ wrt JSONP/JSR-353 tests
• 2025-08-12 (tue)
  • Fix https://github.com/FasterXML/jackson-databind/issues/5237 -- Custom Map, @JsonMerge
  • Fix https://github.com/FasterXML/jackson-databind/issues/2692 -- Setterless properties
• 2025-08-13 (wed)
  • Jackson 3.0.0-rc8 release
  • Merged https://github.com/FasterXML/jackson-core/pull/1464 -- deprecate JsonFactory.createParser(URL)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5257 -- databind changes for ^^^
• 2025-08-17 (sun)
  • Fixed https://github.com/FasterXML/jackson-jr/issues/196 -- serialization of float[], double[]
  • Merged https://github.com/FasterXML/jackson-jr/pull/201 -- Java time support extension
• 2025-08-18 (mon): Merged https://github.com/FasterXML/jackson-databind/pull/5239/ -- Fix @JsonIdentityInfo, Records
• 2025-08-19 (tue)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5264 -- remove ObjectMapper, ObjectReader URL-taking methods
  • Merged https://github.com/FasterXML/jackson-core/pull/1466 -- remove JsonFactory.createParser(URL) (see ^^^)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5265 -- getAllAnnotations() replacement
  • Merged https://github.com/FasterXML/jackson-jr/pull/205 -- byte[] from Array, error
• 2025-08-20 (wed): Fixed https://github.com/FasterXML/jackson-databind/issues/4310 -- @ConstructorProperties, implicit names
• 2025-08-21 (thu)
  • Implemented https://github.com/FasterXML/jackson-databind/issues/5270 -- doc issue for removal of ObjectMapper.setSerializationInclusion()
  • Merged https://github.com/FasterXML/jackson-databind/pull/5224 -- @JacksonInject applied twice (Ctor vs Field)
• 2025-08-22 (fri)
  • Merged https://github.com/FasterXML/smile-format-specification/pull/27 -- Add ref to Flink as Smile format user
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5272 -- Replace ObjectMapper.getRegisteredModuleIds() (2.x) with ObjectMapper.getRegisteredModules() (3.0)
  • Merged https://github.com/FasterXML/jackson-annotations/pull/303 -- use Objects.equals()
• 2025-08-26 (tue)
  • Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/608 -- add Smile/FP-encoding tests
  • Fix for https://github.com/FasterXML/smile-format-specification/issues/28 -- Smile spec, float encoding
• 2025-08-27 (wed): Fixed https://github.com/FasterXML/jackson-databind/issues/5271 -- Enums, @JsonValue

September

• 2025-09-02 (tue): Merged https://github.com/FasterXML/jackson-databind/pull/5286 -- failing test
• 2025-09-05 (fri)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5288 -- Fix 5287, JsonNode.stringValue() for JSON null
  • Update READMEs wrt jackson-annotations versioning scheme
  • 3.0.0-rc9 release!
• 2025-09-08 (mon)
  • Dependabot galore -- CodeCov action
    • https://github.com/FasterXML/jackson-dataformats-binary/pull/612
    • https://github.com/FasterXML/jackson-dataformats-text/pull/576
    • https://github.com/FasterXML/jackson-dataformat-xml/pull/774
    • https://github.com/FasterXML/woodstox/pull/235
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5045 -- No-params Creator vs Default creator
    • Also follow-up: https://github.com/FasterXML/jackson-databind/issues/5302
• 2025-09-09 (tue): Merged https://github.com/FasterXML/jackson-databind/pull/5306 -- fixes to ObjectMapper.registeredModules() (see databind#5272) for details
• 2025-09-10 (wed): Merged https://github.com/FasterXML/jackson-databind/pull/5310 -- Fix to fractional-Double-to-Integer fail exception message
• 2025-09-11 (thu)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5292 -- iPhone props via Constructor parameters
  • Merged https://github.com/FasterXML/jackson-parent/pull/19 -- moditect 1.3.0.Final
• 2025-09-14 (sun): Merged fix for https://github.com/FasterXML/jackson-databind/issues/5313 -- getConverter() -> public
• 2025-09-15 (mon): Merge fix for https://github.com/FasterXML/jackson-databind/issues/5314 -- add MapperFeature.DETECT_PARAMETER_NAMES for backwards compatibility
• 2025-09-16 (tue): Merged https://github.com/FasterXML/jackson-core/pull/1470/ -- JsonGenerator.copyCurrentStructureExact()
• 2025-09-17 (wed): Merged https://github.com/FasterXML/jackson-dataformat-xml/pull/776 -- test for @JacksonXmlText
• 2025-09-19 (fri)
  • Merged fix for https://github.com/FasterXML/jackson-core/issues/1473 -- UTF-8 Surrogate buffer boundary fix
  • Merged fix for https://github.com/FasterXML/jackson-databind/pull/5308 -- Fix for auto-detecting Properties-based Creators
  • 3.0.0-rc10 release!
• 2025-09-20 (sat): Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/601 -- Avro Schema deterministic order
• 2025-09-21 (sun): Merged https://github.com/FasterXML/jackson-integration-tests/pull/33 -- fix for 2.x GradleTest
• 2025-09-22 (mon)
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/615 -- backported fix to 2.19 (of 601 from saturday)
  • Merged https://github.com/FasterXML/jackson-jr/pull/208 -- double[] reading
• 2025-09-24 (wed)
  • Merged https://github.com/FasterXML/jackson-core/pull/1475 -- CI to JDK 25
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5319 -- Float coercion with TreeTraversingParser
• 2025-09-25 (thu)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5324 -- NPE for UUID serialization in 3.0
  • Fix https://github.com/FasterXML/jackson-annotations/issues/316 -- Make JsonFormat.Value serializable
• 2025-09-26 (fri)
  • aalto-xml: release 1.3.4 (via Sonatype Central)
  • compress-lzf (ning/): update to Sonatype Central publish; release 1.1.3 (via Sonatype Central)
  • java-classmate: release 1.7.1 (via Sonatype Central)
  • java-uuid-generator: release 5.1.1 (via Sonatype Central)
• 2025-09-27 (sat): Merged https://github.com/FasterXML/jackson-datatypes-collections/pull/199 -- support for Sorted Eclipse Collection maps
• 2025-09-29 (mon):
  • oss-parent v72 release; related upgrades
  • Minor work on compress-lzf:
    • Did https://github.com/ning/compress/pull/62 -- version to 1.2.x
    • Merged https://github.com/ning/compress/pull/60 -- JUnit5 conversion
    • Merged https://github.com/ning/compress/pull/61 -- No sub-classing of codec
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/617 -- important CBOR regression fix
• 2025-09-30 (tue)
  • Merged https://github.com/FasterXML/jackson/pull/295 -- Jackson 3 Migration Guide, start
  • Merged https://github.com/FasterXML/jackson-databind/pull/5328 -- Undeprecate SerializationFeature.WRITE_EMPTY_JSON_ARRAYS

October

• 2025-10-02 (thu): Merged https://github.com/FasterXML/jackson-databind/pull/5327 -- test for [databind#5312]
• 2025-10-03 (fri)
  • Implemented https://github.com/FasterXML/jackson-core/issues/1480 -- JsonGenerator.getPrettyPrinter()
  • Jackson 3.0.0 GA Release! (https://github.com/FasterXML/jackson/wiki/Jackson-Release-3.0)
  • Work on https://github.com/FasterXML/jackson/blob/main/jackson3/MIGRATING_TO_JACKSON_3.md
• 2025-10-06 (mon): Merged https://github.com/ning/compress/pull/54 -- add bounds check for Unsafe encoders
• 2025-10-08 (wed)
  • Merged https://github.com/FasterXML/jackson-jakarta-rs-providers/pull/57 -- Jakarta-RS Providers 3.0 class names
  • Merged https://github.com/FasterXML/jackson-jaxrs-providers/pull/220 -- JAX-RS Providers 3.0 class names
• 2025-10-10 (fri): Merged https://github.com/FasterXML/oss-parent/pull/218 -- Add version.plugin.failsafe; released v73
• 2025-10-11 (sat): Merged https://github.com/FasterXML/jackson-databind/pull/5341 -- Fix for JsonNode to short/byte coercion
• 2025-10-12 (sun): Fixed https://github.com/FasterXML/jackson-databind/issues/5344 -- EOF for JsonParser.readValueAs()
• 2025-10-14 (tue): Merged https://github.com/FasterXML/jackson-databind/pull/5348 -- flaky @JsonAnyGetter tests
• 2025-10-15 (wed)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5346 -- failing tests for [databind#5342]
  • Merged https://github.com/FasterXML/jackson-databind/pull/5349 -- Fix [databind#5335], Optional behavior change
• 2025-10-16 (thu): Merged https://github.com/FasterXML/jackson-datatypes-collections/pull/202 -- minor pre-PR Guava type modifier change
• 2025-10-19 (sun): Merged fix for https://github.com/FasterXML/jackson-datatypes-collections/issues/195 -- Guava RangeMaps
• 2025-10-20 (mon): Merged https://github.com/FasterXML/jackson-jr/pull/207 -- fix for Record-with-annotations deser issues
• 2025-10-21 (tue)
  • https://github.com/FasterXML/jackson-databind/pull/5360 -- Test repro for [databind#5355]
  • Merged https://github.com/FasterXML/jackson-databind/pull/5359 -- test flakiness fix
  • Merged https://github.com/FasterXML/jackson-databind/pull/5357 -- fix for [databind#5354] CGLIB filtering
• 2025-10-22 (wed)
  • Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/619 -- CBORMapper.isEnabled(CBORReadFeature) (etc)
  • Fixed https://github.com/FasterXML/jackson-dataformat-xml/issues/780 -- XmlMapper.isEnabled(...)
  • Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/581 -- CsvMapper.isEnabled(...) (etc)
• 2025-10-24 (fri)
  • Added test for https://github.com/FasterXML/jackson-modules-base/issues/314 -- Afterburner 3.0 fail
  • Merged https://github.com/FasterXML/jackson-datatypes-misc/pull/76 -- Joda-Money, @JodaMoney overrides
• 2025-10-25 (sat): Implemented https://github.com/FasterXML/jackson-databind/issues/5350 -- configurable "null or absent" for java.util.Optional
• 2025-10-26 (sun)
  • Fixed https://github.com/FasterXML/jackson-jr/issues/210 -- boolean[], short[], float[] deser support -- with Claude Code
  • Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/598 -- protobuf state -- with Claude Code
• 2025-10-27 (mon)
  • Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/599 -- CBOR string-re skip -- with Claude Code
  • Fixed https://github.com/FasterXML/jackson-modules-base/issues/317 -- ByteBuddy dep update
  • Fixed https://github.com/FasterXML/jackson-dataformat-xml/issues/114 -- XmlMapper, strict-dup-detection -- with Claude Code
    • PR: https://github.com/FasterXML/jackson-dataformat-xml/pull/783
• 2025-10-28 (tue): Jackson 2.18.5 release
• 2025-10-29 (wed): Jackson 2.19.3 release
• 2025-10-30 (thu):
  • Jackson 2.20.1 release
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/629 -- IonObjectMapper throws IOException
  • Fixed https://github.com/FasterXML/jackson-core/issues/1180 -- JsonLocation -- with Claude
    • PR: https://github.com/FasterXML/jackson-core/pull/1490
• 2025-10-31 (fri) -- Halloween!
  • Fixed https://github.com/FasterXML/jackson-core/issues/1491 -- PropertyNameMatcher -- with Claude
    • PR: https://github.com/FasterXML/jackson-core/pull/1492
  • Fixed https://github.com/FasterXML/jackson-modules-base/issues/316 -- MrBean, fix byte-buddy-shading -- with Claude
    • PR: https://github.com/FasterXML/jackson-modules-base/pull/321
  • Fixed https://github.com/FasterXML/jackson-modules-base/issues/320 -- MrBean, remove byte-buddy-shading -- with Claude
    • PR: https://github.com/FasterXML/jackson-modules-base/pull/322

November

• 2025-11-01 (sat): Fixed https://github.com/FasterXML/jackson-dataformats-binary/issues/628 -- pom.xml deps to jackson-core
• 2025-11-02 (sun)
  • Fixed https://github.com/FasterXML/jackson-core/issues/363 -- UTF-8 surrogate chars, should fail -- with Claude
    • PR: https://github.com/FasterXML/jackson-core/pull/1494
  • Fixed https://github.com/FasterXML/jackson-core/issues/708 -- FilteringDelegate, empty array -- with Claude
    • PR: https://github.com/FasterXML/jackson-core/pull/1495
  • Merged https://github.com/FasterXML/jackson-core/pull/1497 -- add failing tests for [core#1418]
• 2025-11-03 (mon)
  • Fixed https://github.com/FasterXML/jackson-core/issues/1498 -- FDP Shading def -- with Claude
    • PR: https://github.com/FasterXML/jackson-core/pull/1501
  • Merged https://github.com/FasterXML/jackson-core/pull/1500 -- Fix for UTF-8 surrogate writing -- with Claude
• 2025-11-04 (tue): Merged https://github.com/FasterXML/jackson-datatype-hibernate/pull/190 -- Hibernate 3.x versions!
• 2025-11-05 (wed)
  • Merged https://github.com/FasterXML/jackson-bom/issues/114 -- hibernate 3.x versions added
  • Updated Hib5-jakarta/Hib6/Hib7 to full JPMS
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5203 -- EnumSet deserialization, nulls
• 2025-11-06 (thu)
  • Merged https://github.com/FasterXML/jackson-core/pull/1503 -- IT for [core#1498] (shading of FDP)
  • Fixed https://github.com/FasterXML/jackson-core/issues/1506 -- Async parser, root spaces
  • Fixed https://github.com/FasterXML/jackson-core/issues/784 -- Leading plus sign -- with Claude
    • PR: https://github.com/FasterXML/jackson-core/pull/1508
• 2025-11-07 (fri)
  • Jackson 3.0.2 release!!!
  • Merged https://github.com/FasterXML/jackson-datatype-hibernate/pull/196 -- Hibernate 3.x, SPI file rename
  • Merged https://github.com/FasterXML/jackson-dataformats-binary/pull/635 -- avro 1.11.5 upgrade
• 2025-11-09 (sun): Merged https://github.com/FasterXML/jackson-databind/pull/5385 -- deprecated method removal
• 2025-11-11 (tue)
  • Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/10 -- CSV, arrays, nulls -- with Claude
    • PR: https://github.com/FasterXML/jackson-dataformats-text/pull/585
  • Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/154 -- Empty Doc as Empty Object -- with Claude
    • PR: https://github.com/FasterXML/jackson-dataformats-text/pull/587
• 2025-11-12 (wed)
  • Merged fix for https://github.com/FasterXML/jackson-annotations/issues/320 -- @JsonFormat.radix
• 2025-11-13 (thu): Merged fix for https://github.com/FasterXML/jackson-databind/issues/1381 -- @JacksonInject, inject-only/useInput
• 2025-11-14 (fri)
  • Post-merge fixing for [databind#1381] ^^^
  • Marked https://github.com/FasterXML/jackson-databind/issues/2465 as fixed in 3.0.0 (was fixed just not noted)
• 2025-11-15 (sat)
  • FINALLY fixed https://github.com/FasterXML/jackson-core/issues/1418 -- empty Array filtering -- with Claude
    • PR: https://github.com/FasterXML/jackson-core/pull/1509
• 2025-11-16 (sun): Fixed https://github.com/FasterXML/jackson-databind/issues/5361 -- SBOM publishing
• 2025-11-17 (mon)
  • Fixed https://github.com/FasterXML/jackson-modules-java8/issues/359 -- negative fractions, Instant -- with Claude
    • PR: https://github.com/FasterXML/jackson-modules-java8/pull/378
  • Marked https://github.com/FasterXML/jackson-modules-java8/issues/228 as fixed (usage error)
  • Marked https://github.com/FasterXML/jackson-modules-java8/issues/307 as fixed, update release notes.
  • Fixed https://github.com/FasterXML/jackson-modules-java8/issues/376 -- custom formatter -- with (heavily-modified) Claude
    • PR: https://github.com/FasterXML/jackson-modules-java8/pull/379
• 2025-11-18 (tue): Merged fix for https://github.com/FasterXML/jackson-databind/issues/5393 -- @JsonAnyGetter, schema props
• 2025-11-19 (wed)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5402 -- Fix for null switching for @JsonCreator factory method
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5407 -- Jackson 3 JsonNode#required(java.lang.String) throws JsonNodeException different from JavaDoc
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5398 -- Ignore + Rename -- with Claude
    • PR: https://github.com/FasterXML/jackson-databind/pull/5410
• 2025-11-20 (thu)
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-text/issues/590 -- Snakeyaml-engine 3.0.1
  • Marked https://github.com/FasterXML/jackson-dataformats-text/issues/568 as fixed -- Block write for "\n"
  • Merged https://github.com/FasterXML/jackson/pull/319 -- Migration Guide update
• 2025-11-21 (fri) -- Beaujolais Nouveau Party 2025!!!
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5414 -- NPE for AnnotationMember.annotations()
• 2025-11-22 (sat)
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5413 -- Object Ids with Object[]
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5416 -- Proxies/annotations, Jackson 3
• 2025-11-24 (mon)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5425 -- backport of [databind#5413] from above
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/1196 -- Error-collecting reads
  • Implemented https://github.com/FasterXML/jackson-databind/issues/1981 -- ContainerNode.remove(JsonPointer)
• 2025-11-25 (tue): Merged fix for https://github.com/FasterXML/jackson-databind/issues/5368 -- TokenBuffer, ObjectMapper.convertValue()
• 2025-11-26 (wed)
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/4629 -- Records, @JsonIgnoreProperties
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5432 -- Jackson, Enums-as-key, @JsonProperty
• 2025-11-27 (thu) -- Thanksgiving & Turkey Trot!
  • Merged https://github.com/FasterXML/jackson-databind/pull/5438 -- 3.1, Major Enum serialization refactoring
  • Merged https://github.com/FasterXML/jackson-core/pull/1512 -- Number-parsing fix for UTF8DataInputJsonParser
  • Fixed https://github.com/FasterXML/jackson-modules-base/issues/323 -- bring back SPI metadata
  • Fixed https://github.com/FasterXML/jackson-datatypes-collections/issues/205 -- bring back SPI metadata
  • Fixed https://github.com/FasterXML/jackson-datatypes-misc/issues/78 -- bring back SPI metadata
• 2025-11-29 (sat)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5443 -- ObjectMapper.readValue() final removal
  • Merged https://github.com/FasterXML/jackson-databind/pull/5444 -- fixes 2 BeanDeserializer buffering issues
• 2025-11-30 (sun)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5446 -- test improvement for Maps, @JsonFormat(shape=)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5448 -- BeanDeserializer clean up
  • Merged https://github.com/FasterXML/jackson-databind/pull/5449 -- More BeanDeserializer clean up

December

• 2025-12-01 (mon): Merged https://github.com/FasterXML/jackson-databind/pull/5456 -- minor config change wrt Jackson 2.x/3.x
• 2025-12-02 (tue)
  • Merged https://github.com/FasterXML/jackson-core/pull/1514 -- Config for Jackson 2.x settings
  • Merged https://github.com/FasterXML/jackson-databind/pull/5460 -- Fix Kotlin/308 regression
• 2025-12-03 (wed)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5115 -- Record, @JsonUnwrapped
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5184 -- Record, "getValue()", @JsonIgnore
• 2025-12-04 (thu): Merged https://github.com/FasterXML/jackson-databind/pull/5468 -- Javadoc fixes
• 2025-12-05 (fri)
  • Merged fix for https://github.com/cowtowncoder/java-uuid-generator/issues/124 -- UUID entropy carry-over fix
    • Took almost 1 year to approve, not great (better late than never?)
  • Merged https://github.com/FasterXML/java-classmate/pull/109 -- fix CI wrt JDK 21
  • Fixed https://github.com/FasterXML/java-classmate/issues/76 -- make GenericType wrapper not java.lang.reflect.Type
  • Merged https://github.com/FasterXML/jackson-annotations/pull/325 -- @JsonDeserializeAs, @JsonSerializeAs
• 2025-12-06 (sat): Electric Cookie Run! / Finnish Independence Day
• 2025-12-07 (sun)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/1654 -- "no type info" override
  • Fixed https://github.com/FasterXML/jackson-annotations/issues/326 -- Add JsonTypeInfo.As.NOTHING
• 2025-12-08 (mon)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5482 -- follow up to [databind#1654] fix
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5481 -- Modules, MapperBuilder, saveState
• 2025-12-09 (tue)
  • Implemented https://github.com/FasterXML/jackson-databind/issues/5475 -- Support @JsonDeserializeAs
  • Implemented https://github.com/FasterXML/jackson-databind/issues/5476 -- Support @JsonSerializeAs
  • Merged https://github.com/FasterXML/jackson-databind/pull/5489 -- Code coverage, badges for 3.x PRs
• 2025-12-11 (thu): Fixed https://github.com/FasterXML/jackson-core/issues/1517 -- test module opens warning
• 2025-12-12 (fri)
  • Merged https://github.com/FasterXML/jackson-core/pull/1528 -- TokenStreamFactory, createNonBlocking, signature bug
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5405 -- Map, shape override
• 2025-12-15 (mon): Merged https://github.com/FasterXML/jackson-databind/pull/5493 -- DeserializationProblemHandler.handleNullForPrimitives()
• 2025-12-16 (tue)
  • Merged fix for https://github.com/FasterXML/jackson-dataformat-xml/issues/793 -- XML serialization context init, UUID serialization
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/1516 -- Problem with multi-argument Creator with @JsonBackReference property
• 2025-12-17 (wed)
  • Merged https://github.com/FasterXML/jackson-dataformats-text/pull/596 -- port YAMLAnchor factory from 2.x to 3.x
  • Fixed https://github.com/FasterXML/jackson-dataformats-text/issues/479 -- CSV, strict quoting, linefeed.
  • Merge fix for https://github.com/FasterXML/jackson-databind/issues/2686 -- Builder-based POJOs, back refs
  • Fixed https://github.com/FasterXML/jackson-databind/issues/2438 -- Dups via Creator not Setter
• 2025-12-19 (fri)
  • Merged fix for https://github.com/FasterXML/jackson-dataformats-binary/issues/640 -- CBOR ASCII decode AIOOBE
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/650 -- @JsonUnwrapped vs unknown properties
• 2025-12-20 (sat)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5514 -- minor String optimization (concat instead of String.format()
  • Merged https://github.com/ning/compress/pull/68 -- LZF bounds-checks
• 2025-12-21 (sun): Merged impl for https://github.com/FasterXML/jackson-databind/issues/221 -- Alt Radix for Strings as number serialization
• 2025-12-22 (mon): Implemented https://github.com/FasterXML/jackson-databind/issues/5519 -- java.time, millisecond truncation -- with Claude
• 2025-12-23 (tue)
  • Fixed https://github.com/FasterXML/java-classmate/issues/53 -- Raw type parameter handling (for Comparable f.ex)
  • Fixed https://github.com/FasterXML/jackson-databind/issues/5528 -- Tree-backed generator, writeNumber(String)
• 2025-12-27 (sat): Released Java ClassMate 1.7.2 !!! (with 1 fix)
• 2025-12-28 (sun): My Birthday!
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5369 -- @JsonInclude for Collections
• 2025-12-29 (mon)
  • Merged https://github.com/FasterXML/jackson-databind/pull/5534 -- post-merge fix for ^^^ (wrt backwards-compatibility)
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/5522 -- Collections, JsonFormat.Feature overrides via class annotations
  • Merged https://github.com/FasterXML/jackson-databind/pull/5507 -- defensive handling of missing _assignGenerator
  • Merged fix for https://github.com/FasterXML/jackson-databind/issues/1497 -- @JsonUnwrapped, null if no properties matched
• 2025-12-30 (tue)
  • Merged https://github.com/FasterXML/jackson-modules-java8/pull/381 -- fix to JavaTimeModule