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https://issues.apache.org/jira/browse/LOG4J2-1242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15082990#comment-15082990
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VijayaKumar Guddeti commented on LOG4J2-1242:
---------------------------------------------
Not exactly related to LOG4J2 - 1232.
The issue is, Log4j rollover has to happen based on finest granularity
(dd/HH/mm/ss/SSS) of datePattern inputted to ‘filePattern’ property of
RollingFile appender. But its not rolledover when finest granularity is
mm/ss/SSS
Successful date pattern for midnight rollover are:
1. HHmmssSSS-yyyy-MM-dd (TimeBasedTiggeringPolicy - interval = 1 ,
modulate = true)
2. mmssSSS-yyyy-MM-dd.HH (TimeBasedTiggeringPolicy - interval = 24 ,
modulate = true)
Unsupported date patterns for RollingFile at midnight are:
1. yyyy-MM-dd.HHmm (TimeBasedTiggeringPolicy - interval=1440 , modulate =
true)
2. yyyy-MM-dd.HHmmss(TimeBasedTiggeringPolicy - interval=86400 , modulate
= true)
3. yyyy-MM-dd.HHmmssSSS(TimeBasedTiggeringPolicy - interval=86400000 ,
modulate = true)
I'm happy to furnish if any other info needed.
> Rollover fails to happen over midnight of everyday when RollingFile
> appender's 'filepattern' having mm or ss or SSS as the finest granularity,
> but working as expected when it is dd or HH.
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-1242
> URL: https://issues.apache.org/jira/browse/LOG4J2-1242
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.0-rc1
> Environment: Windows and Linux
> Reporter: VijayaKumar Guddeti
> Labels: features
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> Rollover fails to happen over midnight of everyday when 'date pattern' having
> mm or ss or SSS as the finest granularity, but working as expected when it is
> dd or HH. It means log4j2 (TimeBasedTiggeringPolicy) 'modulate' property is
> not functioning properly with mm or ss or SSS as most specific in 'date
> pattern'.
> Tested with below scenarios, roll over did NOT had at midnight:
> 1. RollingFile - filePattern="/app/rolledoverlogs/%d{yyyy-MM-dd.HHmm}"
> TimeBasedTriggeringPolicy - interval = 1440, modulate = true
> 2. RollingFile - filePattern="/app/rolledoverlogs/%d{yyyy-MM-dd.HHmmss}"
> TimeBasedTriggeringPolicy - interval = 86400, modulate = true
> 3. RollingFile - filePattern="/app/rolledoverlogs/%d{yyyy-MM-dd.HHmmss.SSS}"
> TimeBasedTriggeringPolicy - interval = 86400000, modulate = true
> Tested with below scenarios, roll over is happening at midnight:
> 1. RollingFile - filePattern="/app/rolledoverlogs/%d{yyyy-MM-dd.HH}"
> TimeBasedTriggeringPolicy - interval = 24, modulate = true
> 2. RollingFile - filePattern="/app/rolledoverlogs/%d{yyyy-MM-dd}"
> TimeBasedTriggeringPolicy - interval = 1, modulate = true
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