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

Open All

1253 open issues indexed

Flaky-test: ClientDeduplicationFailureTest.testClientDeduplicationCorrectnessWithFailure Open

area/test help wanted lifecycle/stale Stale type/flaky-tests

apache/pulsar#14523 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
stats-internal throws 500 with message No such ledger exists on Metadata Server Open

help wanted lifecycle/stale Stale type/bug

apache/pulsar#14533 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Unable to build kubernetes objects from release manifest: error validating "" error validating data: [ValidationError(Certificate.spec): unknown field "keyAlgorithm" in io.cert-manager.v1.Certificate.spec Open

help wanted lifecycle/stale type/bug

apache/pulsar#14547 · 7 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Ignoring flow control message when resetCursorInProgress=TRUE Open

lifecycle/stale Stale type/bug

apache/pulsar#14559 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Inconsistent Bookie ledgers and under replicate metadata in Bookie Open

area/admin lifecycle/stale Stale type/bug

apache/pulsar#14573 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
broker restart failed Open

lifecycle/stale Stale type/bug

apache/pulsar#14575 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Cannot open token authentication Open

lifecycle/stale Stale type/bug

apache/pulsar#14591 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Discuss] Enhance Broker Authorization Open

lifecycle/stale Stale type/enhancement

apache/pulsar#14639 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Broker high cpu usage under light load Open

Stale type/bug

apache/pulsar#14660 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
About pulsar CPU usage problem Open

help wanted lifecycle/stale Stale type/bug

apache/pulsar#14662 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Python-Pulsar]Cannot use pulsar function with a python file Open

help wanted lifecycle/stale Stale type/bug

apache/pulsar#14698 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Broken subsequence of delayed messages Open

help wanted type/bug

apache/pulsar#14721 · 13 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
package still exists after calling `pulsar-admin packages delete` Open

lifecycle/stale Stale type/bug

apache/pulsar#14734 · 4 comments · 1 reaction · 1 assignee · Indexed Sep 14, 2026
Create and publish nightly docker images Open

lifecycle/stale Stale type/enhancement

apache/pulsar#14755 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
could we add some hook method to allow users set header in pulsar-admin-client Open

lifecycle/stale Stale

apache/pulsar#14772 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
how to setup rack aware in pulsar Open

lifecycle/stale Stale type/bug

apache/pulsar#14785 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
where is the example of network topology script Open

lifecycle/stale Stale type/bug

apache/pulsar#14791 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
bookie is ready but broker can not fount bookies available Open

lifecycle/stale Stale type/bug

apache/pulsar#14799 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[2.8.1]In Geo-Replication, "Failover" mode subscriptions consume messages repeatedly. Open

lifecycle/stale Stale type/bug

apache/pulsar#14817 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Functions Java Runtime cannot log exceptions to log topic Open

lifecycle/stale Stale

apache/pulsar#14822 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Too many TCP Connections are in CLOSE_WAIT status freeze broker v 2.7.4 Open

lifecycle/stale Stale type/bug

apache/pulsar#14826 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Proxy] Pulsar Handshake was not completed within timeout, Proxy stops working for proxying Broker connections while Admin API proxying keeps working , Open

lifecycle/stale Stale type/bug

apache/pulsar#14831 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[improvement] Functions: ability to produce KeyValue<GenericRecord,GenericRecord> output Open

area/client area/function lifecycle/stale Stale

apache/pulsar#14842 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Broker OOM when the bookie is slowly to respond and AQ is smaller than WQ Open

type/bug

apache/pulsar#14861 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Transaction] internalPinnedExecutor will stuck in acquire semaphore Open

lifecycle/stale Stale type/bug

apache/pulsar#14866 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Pulsar uses a separate JVM configuration for each component Open

lifecycle/stale Stale type/feature

apache/pulsar#14872 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Too many schema ledgers for transaction_buffer_snapshot topic Open

area/transaction lifecycle/stale Stale type/bug

apache/pulsar#14874 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Continues "Connection already closed" for TransactionBufferHandlerImpl Open

area/transaction lifecycle/stale Stale type/bug

apache/pulsar#14875 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-150: Support read the message of startMessageId position on the broker side Open

Stale type/PIP

apache/pulsar#14883 · 3 comments · 4 reactions · 1 assignee · Indexed Sep 14, 2026
All the consumers get stuck for a broker after enabled transaction Open

area/transaction lifecycle/stale Stale type/bug

apache/pulsar#14889 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
After using ns-isolation-policy, topics unload is invalid, only namespace unload is valid Open

lifecycle/stale Stale type/bug

apache/pulsar#14927 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Schema.json: Type not supported: object Open

lifecycle/stale Stale type/bug

apache/pulsar#14932 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Twitter Source Working and Documentation Open

lifecycle/stale type/bug

apache/pulsar#14934 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Topic is temporarily unavailable Open

lifecycle/stale Stale type/bug

apache/pulsar#14941 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
maxBatchSize preallocated memory may be thousands of times larger than actual message length Open

lifecycle/stale Stale

apache/pulsar#14943 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
YAMLLoadWarning in bin/gen-yml-from-env.py script Open

area/function lifecycle/stale Stale

apache/pulsar#14956 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
acknowledgmentAtBatchIndexLevelEnabled will still receive duplicate messages when unload topic Open

lifecycle/stale Stale type/bug

apache/pulsar#14982 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Pulsar Perf OutOfDirectMemoryError: failed to allocate 16777216 byte(s) of direct memory (used: 28621930496, max: 28631367680) Open

lifecycle/stale Stale type/bug

apache/pulsar#14983 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
About proxy support in Client Lookup phase Open

lifecycle/stale Stale type/feature

apache/pulsar#15007 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
PIP-151: Use the system topic to store the bundle load data Open

lifecycle/stale Stale type/PIP

apache/pulsar#15037 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
produce message supports rate limit in fail-fast Open

lifecycle/stale Stale type/feature

apache/pulsar#15038 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Transaction] Retry transaction immediately when fails without waiting for timeout Open

lifecycle/stale Stale type/feature

apache/pulsar#15039 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Reader unusable: Exclusive consumer is already connected Open

lifecycle/stale Stale type/bug

apache/pulsar#15070 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flaky-test: org.apache.pulsar.metadata.LockManagerTest updateValueWhenKeyDisappears flakes Open

area/test lifecycle/stale Stale type/flaky-tests

apache/pulsar#15091 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Go, Functions] Panic while goInstance.ackInputMessage Open

lifecycle/stale Stale type/bug

apache/pulsar#15100 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
The broker reports an error: No such entry Open

lifecycle/stale Stale type/bug

apache/pulsar#15111 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
ResourceGroupConfigListener and ResourceGroupNamespaceConfigListener has an cocurrent bug at startrup Open

lifecycle/stale Stale type/bug

apache/pulsar#15113 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Potential secutiry vulnerability in the shared library which kafka-connect-avro-converter-shaded depends on. Open

Stale type/bug

apache/pulsar#15124 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Admin java sdk can't use BrokerStats.getLoadReport method Open

lifecycle/stale Stale type/bug

apache/pulsar#15167 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
delay message deliver lost messages Open

lifecycle/stale Stale type/bug

apache/pulsar#15171 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

apache/pulsar

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