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Flaky-test: org.apache.pulsar.broker.admin.PersistentTopicsTest.setup

Status: Open.

#26076 In apache/pulsar;

· void-ptr974 opened on Jun 22, 2026

Silent message loss / permanently stuck backlog when producing into an empty head ledger that was fenced+CLOSED by BookKeeper auto-recovery

Status: Open.

#26074 In apache/pulsar;

· Shawyeok opened on Jun 22, 2026

[enhancement] Reduce pulsar-admin / CLI startup time with Class Data Sharing (CDS) via -XX:+AutoCreateSharedArchive

type/enhancementThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messagesThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messages

Status: Open.

#26069 In apache/pulsar;

· lhotari opened on Jun 20, 2026

Add a Model Context Protocol (MCP) server for Apache Pulsar

Status: Open.

#26039 In apache/pulsar;

· k-krawczyk opened on Jun 16, 2026

broker-client-shared-internal-executor doing blocking task

type/enhancementThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messagesThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messages

Status: Open.

#26037 In apache/pulsar;

· programmerahul opened on Jun 16, 2026

[Enhancement] Optimize code that uses cursor.getNumberOfEntriesInBacklog(true) > 0

type/enhancementThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messagesThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messages

Status: Open.

#26036 In apache/pulsar;

· lhotari opened on Jun 16, 2026

·  

5.0.0-M2

[improve][broker] Speed up PendingAcksMap ack tracking with primitive storage and 50%+ lower memory

Status: Open.

#26027 In apache/pulsar;

· void-ptr974 opened on Jun 14, 2026

[improve][build] Replace cross-module test JARs with java-test-fixtures and separate test infrastructure from test classes

type/enhancementThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messagesThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messages

Status: Open.

#26011 In apache/pulsar;

· lhotari opened on Jun 12, 2026

[Bug] Cursor cannot persist individual deleted message state when using managedLedgerPersistIndividualAckAsLongArray=true and backlog is larger than 30M entries

type/bugThe PR fixed a bug or issue reported a bugThe PR fixed a bug or issue reported a bug

Status: Open.

#25985 In apache/pulsar;

· lhotari opened on Jun 9, 2026

[Improve] Pulsar Admin: support custom messagePosition parameter in Topics.peekMessages Java client API

Status: Open.

#25983 In apache/pulsar;

· Pruthvirajj240 opened on Jun 9, 2026

[Improve] Consumer.resume() can leave the consumer stuck and not deliver any messages

type/enhancementThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messagesThe enhancements for the existing features or docs. e.g. reduce memory usage of the delayed messages

Status: Open.

#25978 In apache/pulsar;

· PavelZeger opened on Jun 8, 2026

[Bug] Final managed-ledger ledger cannot be offloaded after topic termination

Status: Open.

#25956 In apache/pulsar;

· void-ptr974 opened on Jun 6, 2026