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[doc] Document Pulsar's concurrency model and memory backpressure model

Status: Open.

#25699 In apache/pulsar;

· lhotari opened on May 6, 2026

Flaky-test: V5ConsumerPriorityLevelTest > testLowerPriorityConsumerReceivesOverflow

area/test

type/flaky-tests

Status: Open.

#25698 In apache/pulsar;

· lhotari opened on May 6, 2026

Distinguish topic close vs delete state and apply consistent guards in scheduled jobs and admin APIs

area/broker

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.

#25688 In apache/pulsar;

· lhotari opened on May 5, 2026

Implement topics stats and segment stats

Status: Open.

#25686 In apache/pulsar;

· merlimat opened on May 5, 2026

Checkpoint consumer should skip deleted segments

Status: Open.

#25683 In apache/pulsar;

· merlimat opened on May 5, 2026

Flaky-test: V5ProducerAccessModeTest > testExclusiveRejectsSecondProducer

area/test

type/flaky-tests

Status: Open.

#25678 In apache/pulsar;

· lhotari opened on May 5, 2026

Make OpenTelemetry usable for Pulsar monitoring by creating example Grafana dashboards

Status: Open.

#25661 In apache/pulsar;

· lhotari opened on May 4, 2026

·  

5.0.0-M1

Usage of java.time.Clock for timestamps isn't consistently performed in Pulsar code base

area/scalable-topics

Status: Open.

#25660 In apache/pulsar;

· lhotari opened on May 4, 2026

Implement seek on admin API (remove from data API)

Status: Open.

#25653 In apache/pulsar;

· merlimat opened on May 2, 2026

Transactions - Adapting Coordinator to Scalable Topics

Status: Open.

#25634 In apache/pulsar;

· merlimat opened on Apr 30, 2026

Add scalable topics support to Pulsar Proxy

area/scalable-topics

Status: Open.

#25630 In apache/pulsar;

· lhotari opened on Apr 30, 2026

Oxia as default Metadata store, incl. documentation

area/scalable-topics

Status: Open.

#25629 In apache/pulsar;

· lhotari opened on Apr 30, 2026