apache/pulsar

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Apache Pulsar - distributed pub-sub messaging system

Stars: 15.3k
Forks: 3.8k
Open beginner issues: 0
Indexed issues: 1.3k
Avg merge: 1d 14h
Merged PRs (30d): 160

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue

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1253 open issues indexed

[Doc] Document supported hardware architectures Open

doc-required Stale

apache/pulsar#18419 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] V4.0.1 wireshark lua script will crash Open

Stale type/bug

apache/pulsar#18439 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Unable to run locally using IntelliJ + Ventura MacOS Open

Stale type/bug

apache/pulsar#18441 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] when deploy in ipv6,HeartbeatNamespace will failed when check Open

Stale type/bug

apache/pulsar#18474 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Enhancement] Support using sql to filter messages Open

Stale

apache/pulsar#18483 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[doc][improve] Add exception examples for transaction API Open

doc-required Stale

apache/pulsar#18488 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Bug] Incompatible schema when having Avro schema without nullable string fields Open

Stale type/bug

apache/pulsar#18501 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-210: Retry producing on next partition if possible when a partition is not available Open

Stale type/PIP

apache/pulsar#18510 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Namespace is being unloaded Open

Stale type/bug

apache/pulsar#18523 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Enhancement] Support reading config options from file in Function Java Runner (JavaInstanceStarter) Open

Stale

apache/pulsar#18532 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] enable debug log lead to pulsar offload to S3 service failed, because BlobStoreManagedLedgerOffloader#offload close BlockAwareSegmentInputStream third times and throw exception. Open

Stale type/bug

apache/pulsar#18536 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add WebSocket Proxy Prometheus Metrics Endpoint Open

Stale

apache/pulsar#18545 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-223: Add metrics for all Rest Endpoints Open

Stale type/PIP

apache/pulsar#18560 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Pulsar function replicas auto scaling Open

Stale

apache/pulsar#18584 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[improve code]Optimize the method computeLocalQuota() in ResourceQuotaCalculatorImpl class Open

Stale

apache/pulsar#18586 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-224: Introduce TopicMessageId for consumer's MessageId related APIs Open

Stale type/PIP

apache/pulsar#18616 · 8 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Bug] Number of partitions metadata is not updated with replicated topics Open

Stale type/bug

apache/pulsar#18657 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Improve function worker bootstrap time when runtime is not equals to thread Open

Stale

apache/pulsar#18670 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Doc] Document how to write Window Functions Open

doc-required Stale

apache/pulsar#18674 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add additional data to negativeAcknowledge Open

Stale

apache/pulsar#18676 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Doc] inaccurate docs on Reference Page Open

doc Stale

apache/pulsar#18682 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flaky-test: ProxyAuthenticationTest.authenticatedSocketTest Open

area/test Stale type/flaky-tests

apache/pulsar#18683 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flaky-test: TransactionBufferClientTest.testAbortOnTopic Open

area/test Stale type/flaky-tests

apache/pulsar#18684 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Backlog Storage ain't reduced after delete inactive subscription Open

Stale type/bug

apache/pulsar#18690 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Issue] The throttling is not exact for both publish and dispatch in pulsar-2.10.1 version Open

Stale type/bug

apache/pulsar#18699 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] [Transaction] Client requires lookup permission for a system topic (transaction_coordinator_assign) Open

Stale type/bug

apache/pulsar#18716 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] CustomExtractor cannot be cast to class org.apache.pulsar.functions.windowing.TimestampExtractor Open

Stale type/bug

apache/pulsar#18719 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Consumer subscription failed. If some partitions on a topic are on a dead broker Open

Stale type/bug

apache/pulsar#18743 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-225: Pulsar Functions fetch parameters from local config file. Open

Stale type/PIP

apache/pulsar#18744 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] within given timeout Open

Stale type/bug

apache/pulsar#18750 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Pulsar zookeeper frequently generates log and snapshot files during operation Open

Stale type/bug

apache/pulsar#18797 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-226: Add JWKS support for AuthenticationProviderToken Open

Stale type/PIP

apache/pulsar#18798 · 3 comments · 3 reactions · 1 assignee · Indexed Sep 14, 2026
pulsar-perf: improve error message when trying to run a transaction on a non-transactional broker. Open

Stale

apache/pulsar#18813 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-228: Refactor Information Architecture of Pulsar Client Documentation Open

Stale type/PIP

apache/pulsar#18822 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Doc] Message Id Uniqueness? Open

doc-required Stale

apache/pulsar#18835 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] The topic message storageSize is 0, Cannot skip msgBacklog for consumer Open

Stale type/bug

apache/pulsar#18880 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Schema Events Open

Stale

apache/pulsar#18893 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] msgInCounter and msgOutCounter don't match Open

Stale type/bug

apache/pulsar#18894 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] NoClassDefFoundError BlobStoreBackedReadHandleImpl Open

Stale type/bug

apache/pulsar#18895 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] broker cannot connect the bookie when bookieId set hostname Open

Stale type/bug

apache/pulsar#18899 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Cannot auto delete partitioned topic Open

Stale type/bug

apache/pulsar#18925 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[improve] [broker] filter transaction_coordinator_assign while shedding Open

Stale

apache/pulsar#18935 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug][Java client] Possible race condition in closing consumer which causes a leak in memory limit controller and direct memory with pooled messages Open

Stale type/bug

apache/pulsar#18938 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug][Java client] Possible race condition in consumer's clearIncomingMessages which causes a leak in memory limit controller and direct memory with pooled messages Open

Stale type/bug

apache/pulsar#18939 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-230: Throw exception when MessageIdImpl and BatchMessageIdImpl compare with each other Open

Stale type/PIP

apache/pulsar#18957 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[enhancement][broker] Introduce thread block monitoring mechnism. Open

Stale type/enhancement

apache/pulsar#18959 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flaky-test: TopicsTest.cleanup Open

area/test Stale type/flaky-tests

apache/pulsar#18962 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add metrics for failed topic load operation Open

Stale type/enhancement

apache/pulsar#18963 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[Bug] pulsar-admin functions upload does not appear to work at all. Open

Stale type/bug

apache/pulsar#18972 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] pulsar-admin functions update does not update the function binary from a local file Open

Stale type/bug

apache/pulsar#18973 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

apache/pulsar

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