[jira] [Resolved] (LOG4J2-2885) Date patterns with microseconds do not work

["Volkan Yazici (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-2885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Volkan Yazici resolved LOG4J2-2885.
-----------------------------------
    Resolution: Fixed

> Date patterns with microseconds do not work
> -------------------------------------------
>
>                 Key: LOG4J2-2885
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2885
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.13.3
>            Reporter: cedric munger
>            Priority: Minor
>             Fix For: 3.0.0, 2.15.0
>
>
> Logback fails to create appenders with a date pattern containing microseconds, such as: dd/MM/yy HH:mm:ss.nnnnnn resulting as the following error message during log4j initialization :
>  
> {code:java}
> 2020-07-03 16:56:40,691 main WARN Could not instantiate FastDateFormat with pattern dd/MM/yy HH:mm:ss.nnnnnn java.lang.IllegalArgumentException: Illegal pattern component: nnnnnn
>  at org.apache.logging.log4j.core.util.datetime.FastDatePrinter.parsePattern(FastDatePrinter.java:311)
>  at org.apache.logging.log4j.core.util.datetime.FastDatePrinter.init(FastDatePrinter.java:166)
>  at org.apache.logging.log4j.core.util.datetime.FastDatePrinter.<init>(FastDatePrinter.java:159)
>  at org.apache.logging.log4j.core.util.datetime.FastDateFormat.<init>(FastDateFormat.java:401)
>  at org.apache.logging.log4j.core.util.datetime.FastDateFormat.<init>(FastDateFormat.java:386)
>  at org.apache.logging.log4j.core.util.datetime.FastDateFormat$1.createInstance(FastDateFormat.java:108)
>  at org.apache.logging.log4j.core.util.datetime.FastDateFormat$1.createInstance(FastDateFormat.java:105)
>  at org.apache.logging.log4j.core.util.datetime.FormatCache.getInstance(FormatCache.java:86)
>  at org.apache.logging.log4j.core.util.datetime.FastDateFormat.getInstance(FastDateFormat.java:151)
> {code}
> Only built in date pattern %d\{DEFAULT_MICROS} work to have microseconds enabled in log statements.



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