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  1. Log4j 2
  2. LOG4J2-2885

Date patterns with microseconds do not work

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.13.3
    • Fix Version/s: 3.0.0, 2.15.0
    • Component/s: Core
    • Labels:
      None

      Description

      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 :

       

      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)
      

      Only built in date pattern %d{DEFAULT_MICROS} work to have microseconds enabled in log statements.

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              • Assignee:
                Unassigned
                Reporter:
                cmunger cedric munger
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                • Created:
                  Updated:
                  Resolved: