Apache Log4j Files

Apache Log4j 2 is a versatile, feature-rich, efficient logging API

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Name	Modified	Size	InfoDownloads / Week
Parent folder
2.26.1 source code.tar.gz	2026-07-02	2.9 MB	0
2.26.1 source code.zip	2026-07-02	8.2 MB	6
README.md	2026-07-02	1.0 kB	0
Totals: 3 Items		11.1 MB	6

This patch release delivers certain fixes on top of 2.26.0.

Changed

Improve logging for LinkageError scenarios involving the LMAX Disruptor library (#2250, [#4124])

Fixed

Fix the createOnDemand behavior of RollingFileAppender to correctly defer file and directory creation until the first log event, while preserving eager creation when disabled. (#2006, [#4072])
Improve documentation for locale handling in the Pattern Layout date pattern converter (#4129, [#4130])
Fix handling of non-finite numbers while encoding MapMessage to JSON (#4163)
Fix encoding of MSGID and SD-ID fields of StructuredDataMessage to XML (#4136)
Fix stack trace rendering for exceptions with identity malfunction (e.g., colliding equals() and/or hashCode() implementations) (#3933, [#4133])
Fix resource leaks in ConfigurationSource when loading configuration via URL fails (#4127)
Fix KafkaAppender reporting error to error handler even after a successful retry (#4125)

Source: README.md, updated 2026-07-02

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