Jackson Release 2.17.1

Patch version of 2.17, open for development as of mid-March 2024.

Following fixes will be included in this patch release.

Changes, core

Streaming

• #1241: Fix NumberInput.looksLikeValidNumber() implementation
• #1256: Revert [#1117]: change default recycler pool back to threadLocalPool() for 2.17.1

Databind

• #4428: ByteBuddy scope went beyond test in version 2.17.0

• #4430: Use ReentrantLock instead of synchronized in DeserializerCache to avoid deadlock on pinning

• #4435: Cannot deserialize value of type java.math.BigDecimal from String ".05": not a valid representation

• #4441: @JsonSetter(nulls = Nulls.SKIP) doesn't work in some situations

• #4450: Empty QName deserialized as null

• #4481: Unable to override DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL with JsonFormat.Feature.READ_UNKNOWN_ENUM_VALUES_AS_NULL

• #4489: Unable to override DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE with JsonFormat.Feature.READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE

Changes, data formats

[Ion]

• #484: Upgrade ion-java to 1.11.4 (from 1.11.2)

Changes, datatypes

Java 8 date/time

• #306: Only DateTimeFormatter.ISO_OFFSET_DATE_TIME accepted by ZonedDateTimeKeyDeserializer

Changes, JVM Languages

Kotlin

• #776: Delete Duration conversion that was no longer needed.
• #779: Errors no longer occur when processing Record types defined in Java.

Changes, Providers

Jakarta-RS Providers

• #26: Replace synchronized blocks with ReentrantLocks
• #28: Mark variables as volatile for safe concurrent access

JAX-RS Providers

• #184: Use ReentrantLocks instead of synchronized blocks
• #187: Mark variables as volatile for safe concurrent access

Changes, other

Jackson-jr

• #90: USE_BIG_DECIMAL_FOR_FLOATS feature not working when using JSON.treeFrom()