Issues

• Kafka connect runtime 1.12.0 Azure Blob writes silently hang due to netty-tcnative/netty-handler

  bug
  apache/iceberg#18395 · Filter by author Ycallaer opened on Oct 6, 2026
  1

• Parquet TIME_MILLIS statistics are not converted to microseconds

  apache/iceberg#18391 · Filter by author zhangxinyao88 opened on Oct 6, 2026

• [Spark/ORC] NullPointerException in SparkOrcWriter when inserting VARIANT data into ORC-backed Iceberg v3 tables

  bug
  apache/iceberg#18386 · Filter by author abjain123 opened on Oct 5, 2026
  1

• Spark 4.2: Implement DSv2 Transaction API (TransactionalCatalogPlugin) in the Spark connector

  apache/iceberg#18384 · Filter by author developer-rpai opened on Oct 5, 2026

• Core: AuthSessionCache's exiting evictor pool registers a never-removed JVM shutdown hook per OAuth2Manager, pinning the creating thread's inheritable thread-locals (leaks closed Spark sessions)

  apache/iceberg#18377 · Filter by author Kingsley-working opened on Oct 5, 2026
  3

• Temporal transforms put pre-epoch timestamps at .999999 into the previous unit

  apache/iceberg#18371 · Filter by author kevinjqliu opened on Oct 4, 2026
  1

• Core: Committing data files fails after promoting the source column of an identity partition field

  apache/iceberg#18355 · Filter by author abrarsher23 opened on Oct 3, 2026

• Spec, OpenAPI: Define hex case for binary and fixed values

  improvement
  apache/iceberg#18352 · Filter by author Revanth14 opened on Oct 2, 2026

• OpenAPI: Remove deprecated TrueExpression and FalseExpression

  improvement
  apache/iceberg#18351 · Filter by author Revanth14 opened on Oct 2, 2026
  1

• Flink: DynamicIcebergSink still duplicates a row when a key column's optionality, type or order, or the equality-field set, changes within one checkpoint

  apache/iceberg#18350 · Filter by author abrarsher23 opened on Oct 2, 2026
  1

• Views: no mechanism to control or garbage-collect the number of metadata.json files

  question
  apache/iceberg#18327 · Filter by author strat97 opened on Sep 30, 2026
  1

• [Spec] Define equivalence of schemas and partition fields

  proposal
  apache/iceberg#18309 · Filter by author Tishj opened on Sep 29, 2026
  3

• [Spark] Schema evolution fails when promoting 'unknown' type column to primitive type

  bug
  apache/iceberg#18305 · Filter by author abjain123 opened on Sep 29, 2026
  3

• Make KMS key generation configurable for AwsKeyManagementClient and AliyunKeyManagementClient (currently always wraps)

  improvement
  apache/iceberg#18300 · Filter by author mengna-lin opened on Sep 28, 2026
  5

• Vector Type Support

  proposal
  apache/iceberg#18297 · Filter by author PFischbeck opened on Sep 28, 2026 · Iceberg V4 Spec
  2

• S3: S3FileIO.deleteFiles ignores vended storage credentials for the last batch

  bug
  apache/iceberg#18263 · Filter by author ragnard opened on Sep 25, 2026

• Flink: DynamicIcebergSink writes an unbindable equality delete when a schema evolution splits one table across two writers inside one checkpoint

  bugflink
  apache/iceberg#18262 · Filter by author abrarsher23 opened on Sep 25, 2026
  4

  

• Parquet: StringReader decodes every occurrence of a dictionary value into a new String

  apache/iceberg#18259 · Filter by author Neuw84 opened on Sep 25, 2026
  2

• Core: equality-delete sets are rebuilt in every scan task even with the executor cache on

  apache/iceberg#18257 · Filter by author Neuw84 opened on Sep 25, 2026
  1

• Spark: Add ResolveBranch test coverage for path identifiers

  improvement
  apache/iceberg#18256 · Filter by author manuzhang opened on Sep 25, 2026
  1

• Improve spark compaction scalability

  improvement
  apache/iceberg#18242 · Filter by author qinghui-xu opened on Sep 24, 2026

• Procedure for re-wrapping table encryption keys

  improvement
  apache/iceberg#18240 · Filter by author ggershinsky opened on Sep 24, 2026
  1

• Key per-column table properties by field ID instead of column name

  apache/iceberg#18235 · Filter by author mengna-lin opened on Sep 24, 2026

• Support the Spark defaultDatabase config in the Spark Catalog and possibly deprecate default-namespace

  improvement
  apache/iceberg#18221 · Filter by author Dzeri96 opened on Sep 23, 2026

• AES GCM spec vs implementation discrepancy

  apache/iceberg#18219 · Filter by author xanderbailey opened on Sep 23, 2026
  1