Issues

• (primitive-collections-base) Use NumberInput to parse numeric map keys, as jackson-databind does

  FasterXML/jackson-datatypes-collections#270 · Filter by author pjfanning opened on Oct 2, 2026

• (eclipse-collections) Avoid allocating a char[] per entry when serializing char-valued primitive maps

  FasterXML/jackson-datatypes-collections#264 · Filter by author pjfanning opened on Oct 1, 2026

• (hppc) Avoid copying ByteArrayList / CharArrayList contents on serialization

  FasterXML/jackson-datatypes-collections#262 · Filter by author pjfanning opened on Oct 1, 2026

• (hppc) Specialized IntIndexedContainer serializer never used (checks JavaType.getClass() instead of raw class)

  hppc
  FasterXML/jackson-datatypes-collections#260 · Filter by author pjfanning opened on Oct 1, 2026

• Hppc BitSet serialized up to allocated capacity (size()), not highest set bit (length())

  hppc
  FasterXML/jackson-datatypes-collections#258 · Filter by author pjfanning opened on Oct 1, 2026

• (guava) Avoid boxing every element when deserializing Ints.asList (etc) primitive lists

  guava
  FasterXML/jackson-datatypes-collections#256 · Filter by author pjfanning opened on Oct 1, 2026

• (guava) Avoid redundant copy when deserializing ArrayListMultimap, HashMultimap, LinkedHashMultimap

  guava
  FasterXML/jackson-datatypes-collections#253 · Filter by author pjfanning opened on Oct 1, 2026

• (eclipse-collections) Pair / Triple deserialization fails for raw types and implementation classes (default typing); Triplet read as TripleImpl

  eclipsec
  FasterXML/jackson-datatypes-collections#251 · Filter by author pjfanning opened on Oct 1, 2026

• Primitive map serializers ignore ORDER_MAP_ENTRIES_BY_KEYS and @JsonInclude content filtering

  FasterXML/jackson-datatypes-collections#250 · Filter by author pjfanning opened on Oct 1, 2026

• (guava) RangeMap cannot be deserialized as Object with default typing (no key deserializer for Comparable)

  FasterXML/jackson-datatypes-collections#246 · Filter by author pjfanning opened on Oct 1, 2026

• (guava) Multimap / RangeMap with Object values serialize each value as {} when root type is given

  guava
  FasterXML/jackson-datatypes-collections#244 · Filter by author pjfanning opened on Oct 1, 2026

• (guava) HashCode cannot be deserialized with default typing: type id is non-public subclass

  guava
  FasterXML/jackson-datatypes-collections#243 · Filter by author pjfanning opened on Oct 1, 2026

• (guava) ImmutableIntArray / ImmutableLongArray / ImmutableDoubleArray serializers do not implement serializeWithType()

  guava
  FasterXML/jackson-datatypes-collections#242 · Filter by author pjfanning opened on Oct 1, 2026

• RangeSetSerializer does not implement serializeWithType(): RangeSet fails to serialize with default typing

  guava
  FasterXML/jackson-datatypes-collections#241 · Filter by author pjfanning opened on Oct 1, 2026

• (eclipse-collections) Most types fail to round-trip with default typing enabled; primitive maps silently lose data

  eclipsec
  FasterXML/jackson-datatypes-collections#240 · Filter by author pjfanning opened on Oct 1, 2026

• (pcollections) PStack / ConsPStack element order is reversed on round-trip

  pcollections
  FasterXML/jackson-datatypes-collections#237 · Filter by author pjfanning opened on Oct 1, 2026

• PrimitiveRefMapSerializer and RefPrimitiveMapSerializer don't extend ContainerSerializer

  FasterXML/jackson-datatypes-collections#62 · Filter by author leventov opened on Oct 28, 2019
  2

• Issue in RefRefMapSerializer

  FasterXML/jackson-datatypes-collections#40 · Filter by author leventov opened on Jan 10, 2019

• Support for fastutil collections

  FasterXML/jackson-datatypes-collections#38 · Filter by author leventov opened on Dec 12, 2018
  8

• Better multiset serialization / deserialization

  good first issueguavapr-welcome
  FasterXML/jackson-datatypes-collections#2 · Filter by author cowtowncoder opened on Mar 30, 2016
  11