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Posted to notifications@logging.apache.org by "Volkan Yazici (Jira)" <ji...@apache.org> on 2019/12/31 09:14:00 UTC

[jira] [Created] (LOG4J2-2753) log4j2.enableThreadlocals flag violation in AbstractStringLayout

Volkan Yazici created LOG4J2-2753:
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             Summary: log4j2.enableThreadlocals flag violation in AbstractStringLayout
                 Key: LOG4J2-2753
                 URL: https://issues.apache.org/jira/browse/LOG4J2-2753
             Project: Log4j 2
          Issue Type: Bug
          Components: Layouts
            Reporter: Volkan Yazici


{{Constants.ENABLE_THREADLOCALS}} constant used to toggle TLAs is not taken into account by {{AbstractStringLayout#getStringBuilder()}}. While the fix is trivial, given a notable amount of layouts extend from {{AbstractStringLayout}}, the impact surface is big: many web applications which used to take advantage of these layouts will observe a performance regression after upgrading to a Log4j 2.0 version with the fix. (See [the discussion in the mailing-list|https://lists.apache.org/thread.html/822e12dd384dd08d8e4899b474b855714ec97244e0365c461c0bd6d3%40%3Cdev.logging.apache.org%3E] for further details.)



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