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HdfsInputSource with index_parallel unnecessarily requires KMS delegation token when using Kerberized HDFS

Uncategorized problem report

Status: Open.

#19411 In apache/druid;

· JWuCines opened on May 5, 2026

Broker fails query with JsonParseException: Invalid type marker byte 0x3c when Historical/Broker returns Jetty's HTML error page for HTTP 429 / 503

Uncategorized problem report

Status: Open.

#19407 In apache/druid;

· rzepinskip opened on May 5, 2026

Documentation needs to be updated to remove mentions of multi-stage-query extension

Status: Open.

#19406 In apache/druid;

· WilliamRoyNelson opened on May 5, 2026

[MM-less extension] Cannot pass JVM flags to peons on MM-less/k8s mode

Uncategorized problem report

Status: Open.

#19385 In apache/druid;

· layoaster opened on Apr 28, 2026

Query Performance Degradation with Null Handling

Area - Querying

Performance

Status: Open.

#19344 In apache/druid;

· GWphua opened on Apr 17, 2026

Nested Avro fields flattened as VARCHAR instead of native types when using useSchemaDiscovery

Uncategorized problem report

Status: Open.

#19332 In apache/druid;

· greenwich opened on Apr 16, 2026

Upgrade Kafka Client version to 4.2.0

Status: Open.

#19322 In apache/druid;

· Shekharrajak opened on Apr 15, 2026

Add facets to OpenLineage

Feature/Change Description

Status: Open.

#19314 In apache/druid;

· mshahid6 opened on Apr 14, 2026

Timeseries query over UnnestDataSource with non-ALL granularity hangs on wide intervals

Uncategorized problem report

Status: Open.

#19270 In apache/druid;

· gammacomputer opened on Apr 7, 2026

[Druid Iceberg Extension] Implement incremental/snapshot-based ingestion to support real-time use cases

Feature/Change Description

Status: Open.

#19268 In apache/druid;

· Shekharrajak opened on Apr 6, 2026

[Druid Iceberg Extension] Add column projection support to reduce I/O and improve query performance

Status: Open.

#19267 In apache/druid;

· Shekharrajak opened on Apr 6, 2026

sqlQuery metrics always emit null remoteAddress for JDBC/Avatica queries

Feature/Change Description

Status: Open.

#19230 In apache/druid;

· dprmfl opened on Mar 30, 2026