apache/iceberg

View on GitHub

Apache Iceberg

Stars: 9.2k
Forks: 3.5k
Open beginner issues: 0
Indexed issues: 450
Avg merge: 2d 16h
Merged PRs (30d): 129

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Open All

443 open issues indexed

Metadata: Hidden Partitions with transformation depending on the way it has created has different names Open

bug

apache/iceberg#16238 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Silent data nullification during MERGE when nullable struct contains non-nullable children Open

bug

apache/iceberg#16246 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Cleanup code for max-file-group-size-bytes in Iceberg rewrite files. Open

improvement

apache/iceberg#16248 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Kafka Connect] Duplicate file registration across snapshots during coordinator recovery (append-only, IKC 1.10.1) Open

apache/iceberg#16282 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Aliyun/Dell: Classify missing object reads as NotFoundException Open

apache/iceberg#16299 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Iceberg kafka Connect Support for Shredding Open

question

apache/iceberg#16309 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flink: Lookup join support Open

improvement

apache/iceberg#16312 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Flink: Add Flink SQL procedures for Iceberg similarly to Apache Paimon Open

improvement

apache/iceberg#16314 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Best approach to generate Change Data Capture (CDC) from MERGE operations on Merge-on-Read tables? Open

question

apache/iceberg#16342 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Encryption keys in metadata are not cleaned up Open

bug

apache/iceberg#16352 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Kafka Connect: Include connector name in coordinator and committer thread names Open

bug

apache/iceberg#16354 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
will Develocity speed up CI? Open

build

apache/iceberg#16358 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark: serializable-isolation tests can run until external CI/resource limits Open

build

apache/iceberg#16359 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Proposal: KAFKA CONNECT: Worker needs to detect the Coordinator's progress Open

proposal

apache/iceberg#16389 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
spark-ci walltime improvements Open

apache/iceberg#16397 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Expose server-assigned resource identifiers (tableId) in LoadTableResponse REST API Open

proposal

apache/iceberg#16399 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark: rewrite_table_path fails on second run with FileAlreadyExistsException for position delete files Open

bug

apache/iceberg#16418 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark: Implement SupportsReportOrdering in SparkBatchQueryScan Open

improvement

apache/iceberg#16430 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Remove deprecated methods for 1.12.0 Open

apache/iceberg#16445 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark: implement SupportsPushDownVariantExtractions for shredded variant column pruning (plan change) Open

improvement

apache/iceberg#16448 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Variant parsing is vulnerable to memory-DoS and malformed-input crashes Open

apache/iceberg#16455 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Multiple custom decoders allocate heap memory directly from file-controlled sizes without defensive caps Open

apache/iceberg#16458 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
S3 remote signer clients share auth and HTTP state across catalogs Open

Security

apache/iceberg#16460 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
The Key Vault client trusts any configured vault URL and reuses ambient Azure credentials Open

Security

apache/iceberg#16465 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Deletion-vector length and offset are not validated enough to stop crash or huge allocation attacks Open

apache/iceberg#16475 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Mixed-prefix GCS batch deletes reuse the first object's client for the whole batch Open

GCP

apache/iceberg#16480 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`remove_orphan_files` scopes `file_list_view` with raw string prefix matching Open

bug good first issue

apache/iceberg#16493 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Arrow: Vectorized reads of decimal columns with default values fail with IllegalArgumentException Open

bug

apache/iceberg#16502 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Optimize re-partitioning for satisfiable schema evolution to minimize creation of too many small files. Open

improvement

apache/iceberg#16514 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flaky tests in iceberg-azure integrationTest Open

AZURE

apache/iceberg#16530 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
The canonicalization of Filter Expressions (Data and runtime) is broken in SparkRuntimeFilterableScan Open

apache/iceberg#16563 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Should behaviour of `dropTable` be up to REST Catalog implementation? Open

question

apache/iceberg#16564 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core: Add table-level filtering for MetricsReporter implementations Open

apache/iceberg#16573 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SchemaUpdate cannot move a column by its new name after renameColumn in the same update Open

question

apache/iceberg#16581 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flink: Expose scan planning metrics on ContinuousIcebergEnumerator Open

improvement

apache/iceberg#16589 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`initial-default`+`write-default` `{}` (struct default value) representation issue Open

bug

apache/iceberg#16596 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Parquet vectored I/O hardcoded ON + on-heap allocator causes executor OOM on S3FileIO reads of high-compression tables (regression in 1.11.0) Open

apache/iceberg#16600 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Kafka Connect: KafkaMetadataTransform leaks configuration across instances via a static field Open

apache/iceberg#16601 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Make better use of partitions for simple queries Open

improvement

apache/iceberg#16622 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Spark] parquet ingestion to azure gets stuck when hadoop fs cache is disabled Open

bug

apache/iceberg#16640 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flink: Support ALTER TABLE ... DROP PARTITION syntax Open

improvement

apache/iceberg#16646 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Commit-validation failures Open

question

apache/iceberg#16659 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core: Report failed scans and commits to MetricsReporter Open

apache/iceberg#16661 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`rewrite_table_path` throws FileNotFoundException on DELETED position delete manifest entries Open

bug

apache/iceberg#16662 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark 4.1: Support Iceberg time type Open

improvement

apache/iceberg#16663 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark: Support ALTER TABLE ... DROP PARTITION syntax Open

improvement

apache/iceberg#16670 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Spark] Capture and emit aggregated data-file (Parquet footer) metrics at commit time Open

proposal

apache/iceberg#16675 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark 4.1: Fail fast when a parameter context reaches an Iceberg DDL command Open

apache/iceberg#16683 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Unexpected duplicate ID after ingest: input parquet has single ID, but Iceberg table keeps one duplicated key Open

bug

apache/iceberg#16685 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
v4: add manifest write support Open

improvement

apache/iceberg#16694 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026

apache/iceberg

Get new issues in your inbox