5.1.0

Issues

• [fix][broker] Prevent incorrect isolation fallback during cluster updates

  release/4.0.15release/4.2.6release/5.0.2type/bug
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  apache/pulsar#26798·Denovo1998 opened Oct 1, 2026 · Updated Oct 23, 2026
  6

  

• [improve][pip] PIP-495: Scalable Topic Geo-Replication

  PIP
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  apache/pulsar#26692·merlimat opened Sep 22, 2026 · Updated Oct 7, 2026
  10

• [improve][admin] Validate dynamic configuration updates against FieldContext constraints

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  apache/pulsar#26087·Dream95 opened Jun 25, 2026 · Updated Oct 15, 2026

• [improve][ml] Optimize read entries with skipCondition

  area/MLcategory/performancedoc-not-neededready-to-testtriage/lhotari/important
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  apache/pulsar#22560·dao-jun opened Apr 23, 2024 · Updated Oct 20, 2026
  35

  

• [fix][compaction] Size rebatch buffers from uncompressed batches

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  apache/pulsar#26732·Asthenia0412 opened Sep 28, 2026 · Updated Oct 18, 2026

• [improve][broker] broker-stats for a given broker from broker-list

  release/5.0.2
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  apache/pulsar#26997·programmerahul opened Oct 19, 2026 · Updated Oct 23, 2026
  26

  

• [fix][schema] Exclude deleted schema versions from recovery results

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  apache/pulsar#27002·Denovo1998 opened Oct 19, 2026 · Updated Oct 21, 2026
  1

  

• [fix][ml] Fix cursor reset wrongly persisting pre-reset ACKs that cause messages to be silently skipped after recovery

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  apache/pulsar#26973·void-ptr974 opened Oct 18, 2026 · Updated Oct 23, 2026

• [improve][broker] Recover incompatible replication schemas on metadata changes

  ready-to-testrelease/4.0.15release/4.2.6release/5.0.2
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  apache/pulsar#27033·poorbarcode opened Oct 21, 2026 · Updated Oct 23, 2026
  41

  

• [improve][test] Add durable broker and bookie process-failure tests

  area/testready-to-test
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  apache/pulsar#27042·codelipenghui opened Oct 21, 2026 · Updated Oct 22, 2026
  

• [Enhancement] Migrate from simpleclient to Prometheus Java client 1.x (tracking)

  type/enhancement
  apache/pulsar#27045 · Filter by author lhotari opened on Oct 22, 2026 · 5.1.0

• [improve][misc] PIP-351: Add options to Pulsar-Test client to support KeyStore based TLS

  doc-requiredready-to-test
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  apache/pulsar#22692·shasank112001 opened May 10, 2024 · Updated Oct 22, 2026
  13

  

• [improve][misc] PIP-351: Add options to Pulsar-Test client to support KeyStore based TLS

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  apache/pulsar#27058·merlimat opened Oct 22, 2026 · Updated Oct 23, 2026
  6

• [improve][client] Log the stack trace when MessageCryptoBc fails to load a key or encrypt/decrypt a data key

  area/clientdoc-not-neededready-to-testStale
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  apache/pulsar#19867·rdhabalia opened Mar 20, 2023 · Updated Oct 23, 2026
  4

  

• [fix][broker] Keep the bundle affinity broker for every lookup until the bundle is owned

  doc-not-neededrelease/5.0.2Stale
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  apache/pulsar#19260·Nicklee007 opened Jan 17, 2023 · Updated Oct 23, 2026
  3

• [fix][ml] Fix off-by-one backlog of cursors created while an entry is being added

  doc-not-neededready-to-testStale
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  apache/pulsar#19352·poorbarcode opened Jan 29, 2023 · Updated Oct 23, 2026
  4

  

• [fix][client] Send the redeliver while the consumer reconnects so the broker learns the new epoch

  category/reliabilitydoc-not-neededready-to-testStaletriage/lhotari/important
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  apache/pulsar#20032·congbobo184 opened Apr 6, 2023 · Updated Oct 23, 2026
  19

  

• [improve][fn] PIP-237: Expose PulsarAdmin in SinkContext and SourceContext

  doc-not-neededready-to-testStale
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  apache/pulsar#19679·alpreu opened Mar 1, 2023 · Updated Oct 23, 2026
  9

  

• [improve][admin] Include schema ledger ids in topic internal-info

  area/brokerarea/clidoc-not-neededready-to-testStale
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  apache/pulsar#19883·rdhabalia opened Mar 21, 2023 · Updated Oct 23, 2026
  6

  

• [fix][admin] Fix the conversion from the response to string in client error handling

  area/admindoc-not-neededStaletype/bug
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  apache/pulsar#18937·fantapsody opened Dec 15, 2022 · Updated Oct 23, 2026
  8