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Use WAL mode for the REST fixture's SQLite backend

Status: Open.

#18043 In apache/iceberg;

· kevinjqliu opened on Sep 10, 2026

Enable Kafka coordinator fencing when committing consumer offsets

improvementPR that improves existing functionalityPR that improves existing functionality

Status: Open.

#18038 In apache/iceberg;

· twthorn opened on Sep 10, 2026

Nessie: listNamespaces checks the parent namespace at a stale ref hash

Status: Open.

#18034 In apache/iceberg;

· thswlsqls opened on Sep 10, 2026

MR: IcebergInputFormat drops identity partition constants

Status: Open.

#18033 In apache/iceberg;

· thswlsqls opened on Sep 10, 2026

MR: IcebergSplit.getLocations discards cached block locations on repeated calls

Status: Open.

#18032 In apache/iceberg;

· thswlsqls opened on Sep 10, 2026

Spark: vectorized reads probe the position delete index once per row - 43–58% of scan CPU on narrow projections

improvementPR that improves existing functionalityPR that improves existing functionality

Status: Open.

#18026 In apache/iceberg;

· JeonDaehong opened on Sep 9, 2026

Row-granular concurrency for V3 deletion vectors on UPDATE/MERGE (refine validateNoConflictingDeleteFiles)

Status: Open.

#18020 In apache/iceberg;

· sezruby opened on Sep 8, 2026

Proposal: KAFKA CONNECT: JMX metrics for the iceberg-kafka-connect commit pipeline

proposalIceberg Improvement Proposal (spec/major changes/etc)Iceberg Improvement Proposal (spec/major changes/etc)

Status: Open.

#18007 In apache/iceberg;

· HenryCaiHaiying opened on Sep 8, 2026

Spark: copy-on-write UPDATE ... WHERE <subquery> can silently duplicate rows — race in SparkCopyOnWriteScan.filter() when both Union branches apply the runtime file filter concurrently (Spark 4.0.x / 4.1.x)

bugSomething isn't workingSomething isn't working

Status: Open.

#18004 In apache/iceberg;

· ignaski opened on Sep 7, 2026

Spark Trigger.AvailableNow fails when the initial streaming snapshot is expired

bugSomething isn't workingSomething isn't working

Status: Open.

#18000 In apache/iceberg;

· adelfardi opened on Sep 7, 2026

Skip redundant SplitScanTask for single-split files

improvementPR that improves existing functionalityPR that improves existing functionality

Status: Open.

#17999 In apache/iceberg;

· wangyum opened on Sep 7, 2026

Temporarily reject statistics files for encrypted tables?

improvementPR that improves existing functionalityPR that improves existing functionality

Status: Open.

#17995 In apache/iceberg;

· smaheshwar-pltr opened on Sep 7, 2026