apache/druid

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Apache Druid: a high performance real-time analytics database.

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Forks: 3.8k
Open beginner issues: 0
Indexed issues: 649
Avg merge: 1d 19h
Merged PRs (30d): 209

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 12, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Open All

647 open issues indexed

Race in SegmentAllocateAction with segment lock Open

Bug

apache/druid#9571 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
TransformSpec for firehoses appear to perform the operation twice Open

Area - Batch Ingestion Area - Streaming Ingestion Bug Contributions Welcome

apache/druid#9589 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
druid-ranger-security failure when building distribution Open

Bug

apache/druid#9629 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fail to deserialize a JSON for SegmentLockReleaseAction Open

Bug

apache/druid#9657 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
segment/unavailable/count metric is misleading during handoff Open

Area - Metrics/Event Emitting Bug

apache/druid#9677 · 2 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
groupBy query: limit push down to segment scan is poor performance Open

Performance

apache/druid#9689 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add IS_MULTIVALUE and COMPLEX_TYPE columns to INFORMATION_SCHEMA.COLUMNS Open

Area - SQL Feature/Change Description

apache/druid#9707 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
LATEST(expr, maxBytes) doesn't work on columns ingested as stringLast. Open

Area - Querying Bug

apache/druid#9756 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Druid SQL does not support IN clause with null Open

Area - SQL Bug

apache/druid#9758 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Kinesis supervisor is showing unhealthy and task are not running when one or more partition is empty Open

Area - Streaming Ingestion Bug

apache/druid#9763 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Support directly reading and writing Druid data from Spark Open

Apache Spark Design Review Proposal

apache/druid#9780 · 42 comments · 74 reactions · 0 assignees · Indexed Sep 14, 2026
Segments cannot be loaded from HDFS deep storage when datasource name has special characters Open

Area - Deep Storage Bug

apache/druid#9788 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Join condition evaluation deferral Open

Area - Querying Performance Proposal

apache/druid#9796 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Proposal: Add configurable Server Guild attribute to enable the coordinator to make replication decisions that spread replicants across operator defined guilds Open

Area - Segment Balancing/Coordination Design Review Proposal

apache/druid#9816 · 21 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Expression functions should fail when given parameters are not what they expect Open

Area - Querying Bug

apache/druid#9824 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Can not plan left join query on 2 inline datasources Open

Area - SQL Bug

apache/druid#9826 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spark built in connector for Druid Open

Apache Spark Design Review Proposal

apache/druid#9835 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Reordering of predicates and filters (pushing up and/or pushing down) in JOINs to get the most performant plan Open

Feature/Change Description Performance

apache/druid#9843 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Potential resource leaks in IntermediateRowParsingReader.intermediateRowIterator() Open

Area - Batch Ingestion Bug

apache/druid#9867 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Ineffective "segmentGranularity" with customized "duration granularity" Open

Area - Streaming Ingestion Bug

apache/druid#9894 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Remove Bindable query path Open

Area - SQL

apache/druid#9896 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
coordinator restart during index task shutdown may cause succesful task to get failed Open

Bug

apache/druid#9912 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
kafka indexing tasks may stall when checkpointing during coordinator restart Open

Bug

apache/druid#9913 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Dimension from inputSource is ignored when not explicitly defined Open

Area - Batch Ingestion Bug

apache/druid#9914 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
query slow about near real time data Open

Area - Streaming Ingestion Performance

apache/druid#9918 · 15 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
A Proposal about Extension Center Open

Area - Extension Discuss Ease of Use

apache/druid#9926 · 3 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
SQL query returns StackOverFlowError Open

Area - SQL Bug

apache/druid#9932 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Broadcast join support based on broadcast rule Open

Area - Querying Area - Segment Balancing/Coordination Design Review Proposal

apache/druid#9953 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
possiblyResetDataSourceMetadata() slows down the kinesis index task Open

Area - Streaming Ingestion Performance

apache/druid#9955 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
doubleSum aggregator produces a result with new precision on each run Open

Area - Querying Bug

apache/druid#9961 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Missing description for "bySegment" with SQL Open

Area - Documentation

apache/druid#9962 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Grouping Sets Behaviors Strangely On Druid with Filter conditions Open

Area - SQL Bug

apache/druid#9966 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Extension: oak-incremental-index: Low resource (RAM and CPU) incremental-index implementation using off-heap key/value map (OakMap) Open

Design Review Proposal

apache/druid#9967 · 34 comments · 7 reactions · 0 assignees · Indexed Sep 14, 2026
Overwriting tasks doesn't guarantee atomic update of segments across time chunks Open

Area - Batch Ingestion Improvement

apache/druid#9973 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Vulnerability on netty-3.10.6.Final.jar Open

Security

apache/druid#9979 · 6 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
inner join condition on numeric column matching null behaves differently than string key matching null Open

Area - Null Handling Area - SQL Bug

apache/druid#9980 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Suspicious persists during the ingestion Open

Area - Streaming Ingestion Bug

apache/druid#9981 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
org.apache.druid.java.util.common.ISE: Could not allocate segment for row with timestamp Open

Area - Batch Ingestion Bug

apache/druid#9990 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
index_parallel task fails if segmentGranularity has a timeZone Open

Area - Batch Ingestion Bug

apache/druid#9993 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Imperfect rollup in native ingestion when using integer dimensions and replacing nulls with default value Open

Area - Batch Ingestion Bug

apache/druid#10004 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Druid SQL Differing Results When Grouping By 1 Column vs 1 Col With Dummy Column Open

Area - Querying Bug

apache/druid#10011 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
HAVING on multi-value column should not be pushed down to WHERE Open

Area - SQL Bug

apache/druid#10044 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Support batch append of hash/range-partitioned segments Open

Area - Batch Ingestion Design Review Proposal

apache/druid#10045 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Documentation for SQL ARRAY vs. multi-value VARCHAR behavior Open

Area - Documentation Area - SQL Area - Testing

apache/druid#10051 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Reconcile SQL MV function behavior on SQL arrays Open

Area - SQL

apache/druid#10052 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Druid New Console Changes Open

Area - Web Console Feature/Change Description Improvement

apache/druid#10083 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
NumberedPartitionChunk and NumberedOverwritingPartitionChunk are not compatible Open

Area - Batch Ingestion Area - Streaming Ingestion Bug Design Review

apache/druid#10155 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
query topN with join the result not rollup Open

Bug

apache/druid#10179 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
JDBC: Support context parameters sent through connection string Open

Area - SQL Feature

apache/druid#10184 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
IndexOutOfBoundsException in RelDecorrelator.decorrelateQuery Open

Area - SQL Bug

apache/druid#10204 · 5 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026

apache/druid

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