apache/iceberg

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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

Flink Sink: Add WriteObserver plugin interface for per-record metadata Open

apache/iceberg#15783 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core: Map struct key fields not accessible via short names Open

bug

apache/iceberg#15785 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
NullabilityHolder.reset() does not clear the isNull array Open

bug

apache/iceberg#15808 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Unable to read data when using nested field as identifier Open

bug

apache/iceberg#15826 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Control topic always increasing Open

question

apache/iceberg#15844 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Support write options for iceberg merge query Open

improvement

apache/iceberg#15845 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Data loss with FlinkSink (v1) - due to unaligned checkpoints? Open

bug

apache/iceberg#15846 · 6 comments · 6 reactions · 0 assignees · Indexed Sep 14, 2026
[feature request] Add scheduled refresh for storage credentials held by ADLSFileIO Open

good first issue improvement

apache/iceberg#15852 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Use Iceberg in Spark, Procedures return error Open

question

apache/iceberg#15870 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
CachingCatalog does not close FileIO on cache eviction, causing S3FileIO / SDK v2 thread leak in long-running applications Open

bug

apache/iceberg#15898 · 17 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Double slash (//) in table location path Open

bug

apache/iceberg#15908 · 17 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Docs: Clarify Spark branch write precedence over WAP branch Open

docs good first issue improvement

apache/iceberg#15916 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
RFC: Derived column support in Iceberg spec Open

proposal

apache/iceberg#15923 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core: Stream DV Puffin rewrite in RewriteTablePathUtil to reduce memory pressure Open

core good first issue improvement

apache/iceberg#15924 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Flink] DynamicIcebergSink: Support projected schema writes for wide-table optimization Open

apache/iceberg#15925 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`write-default` null representation issue Open

bug

apache/iceberg#15932 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Build 'iceberg-rest-fixture' Docker Image random failure Open

improvement

apache/iceberg#15943 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
REST: Add ETag and conditional GET support for loadView Open

proposal

apache/iceberg#15946 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
REST: Add query parameters to trim snapshot-log and metadata-log in loadTable responses Open

proposal

apache/iceberg#15947 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Gradle deprecation warnings: replace Groovy DSL property assignment syntax Open

apache/iceberg#15976 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add branch support for `RewriteManifests` operation Open

improvement

apache/iceberg#15981 · 2 comments · 10 reactions · 0 assignees · Indexed Sep 14, 2026
API, Spark: Add direct UUID string-to-ByteBuffer conversion Open

improvement

apache/iceberg#16003 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Parallelize writer flush in `DynamicWriter.prepareCommit` Open

improvement

apache/iceberg#16014 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
iceberg-kafka-connect zombie coordinator thread when writing to S3 fails Open

bug

apache/iceberg#16016 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Propagate `iceberg.hadoop.conf.` prefixed properties to `HadoopFileIO`'s Configuration Open

improvement

apache/iceberg#16017 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Parquet: ParquetFilters.convert() does not handle AlwaysFalse, may produce incorrect filter pushdown Open

improvement

apache/iceberg#16032 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core: Puffin LZ4 footer compression throws UnsupportedOperationException at runtime Open

bug

apache/iceberg#16033 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Parquet: Filter pushdown throws UnsupportedOperationException for decimal and UUID predicates Open

bug

apache/iceberg#16035 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Support dynamic timestamp args in Iceberg CALL Open

improvement

apache/iceberg#16057 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
EOF not handled correctly in single byte read in cloud storage InputStream implementations Open

bug

apache/iceberg#16062 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Virtual Field Metadata for Semi-Structured (VARIANT) Columns Open

proposal

apache/iceberg#16064 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add added-puffin-files write metric Open

improvement

apache/iceberg#16068 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Allow for v3 date -> time promotion Open

improvement

apache/iceberg#16083 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Parquet per column compression Open

improvement

apache/iceberg#16090 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flink: DynamicIcebergSink operator UID is non-deterministic across JVM restarts, breaking last-state / savepoint recovery Open

bug

apache/iceberg#16128 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Hive: add HiveCatalog(Configuration, Map<String, String>) convenience constructor Open

apache/iceberg#16134 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flink: Add RemoveDanglingDeleteFiles support to the Flink maintenance API Open

improvement

apache/iceberg#16138 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fix reading Encrypted Deletion Vectors Open

bug

apache/iceberg#16157 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[REST] First-class Tag concept in Iceberg REST Catalog Open

apache/iceberg#16165 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core: Add OpenTelemetry MetricsReporter Open

apache/iceberg#16169 · 2 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Flink: Update Flink release notes for 1.11.0 release Open

apache/iceberg#16170 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core, Spark: Performant queries over (shredded) Variant data Open

improvement

apache/iceberg#16172 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Core: Enable re-partitioning of old spec data files. Open

improvement

apache/iceberg#16189 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Encryption integration with REST scan planning Open

improvement

apache/iceberg#16192 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
KMS credential vending Open

improvement

apache/iceberg#16194 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Iceberg proto representations of tech spec Open

improvement

apache/iceberg#16195 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
DROP COLUMN on identity partition field corrupts table metadata and makes it unrecoverable Open

bug

apache/iceberg#16217 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Implement metrics evaluators that work directly with ContentStats Open

improvement

apache/iceberg#16218 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Post 1.11.0 release Open

apache/iceberg#16223 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Core: REPLACE TABLE transaction silently overwrites concurrent committed changes Open

apache/iceberg#16232 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

apache/iceberg

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