> ## Documentation Index
> Fetch the complete documentation index at: https://docs.streamnative.io/llms.txt
> Use this file to discover all available pages before exploring further.

# V4.2.1.13

# StreamNative Weekly Release Notes v4.2.1.13

## Download

### Distributions

* [https://github.com/streamnative/pulsar/releases/tag/v4.2.1.13](https://github.com/streamnative/pulsar/releases/tag/v4.2.1.13)

### Packages

* [Maven Central](https://search.maven.org/artifact/io.streamnative/pulsar/4.2.1.13/pom)

### Images

* [sn-platform](https://hub.docker.com/layers/streamnative/sn-platform/4.2.1.13/images/sha256-cfb91cabce9c82ebe15f92ec3d87a354326e10d730d179f43476ab30d6065417)

* [sn-platform-slim](https://hub.docker.com/layers/streamnative/sn-platform-slim/4.2.1.13/images/sha256-8a4262e1701ee0a1d29b5f02c0f47dceed973421ad59b9c9f26236733071c2d6)

* [private-cloud](https://hub.docker.com/layers/streamnative/private-cloud/4.2.1.13/images/sha256-8a4262e1701ee0a1d29b5f02c0f47dceed973421ad59b9c9f26236733071c2d6)

## General Changes

### Apache Pulsar

([#26313](https://github.com/apache/pulsar/pull/26313)) \[improve]\[broker] Add pulsar\_subscription\_storage\_backlog\_age\_seconds metric

([#26361](https://github.com/apache/pulsar/pull/26361)) \[fix]\[broker] Do not log an error when the tenant does not exist

([#26415](https://github.com/apache/pulsar/pull/26415)) \[fix]\[fn] Honour negativeAckRedeliveryDelayMs in the Go function runtime

([#26381](https://github.com/apache/pulsar/pull/26381)) \[improve]\[broker] Change partition metadata not-found log to warn

### KoP

\[fix] Add txn flag for system offset topic transaction messages

### StreamNative Pulsar Plugins

bfed8941f Stabilize cluster rollout unload test

d012ef32e Stabilize V1 REST consumer test

### Cloud Pulsar Plugins

Change to use commons-lang3

### Pulsar Tiered Storage v2

fix(read): prevent v1 block-index reads from failing on large padding

improve(azure): set pending acquire default to 512

## Security Fixes

### Apache Pulsar

([#24992](https://github.com/apache/pulsar/pull/24992)) \[fix]\[sec] Upgrade avro to 1.12.2