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https://issues.apache.org/jira/browse/LOG4J2-2106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16247031#comment-16247031
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Ralph Goers commented on LOG4J2-2106:
-------------------------------------
The problem isn't that rollover is synchronized but that checkRollover is
synchronized. Two rollovers cannot be allowed to happen concurrently but we
should be able to determine if rollovers are required concurrently.
> May blocked when two compress action
> ------------------------------------
>
> Key: LOG4J2-2106
> URL: https://issues.apache.org/jira/browse/LOG4J2-2106
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.9.1
> Reporter: skopt
>
> My log file is very large, so I set the config about compression. The
> policies is as follows:
> <Policies>
> <OnStartupTriggeringPolicy/>
> <TimeBasedTriggeringPolicy/>
> </Policies>
> When restart the service on the hour, this will trigger the two
> policies. And I find that the log can not be written for a while.
> I think, there would be two compress actions. In the file
> RollingFileManager(package org.apache.logging.log4j.core.appender.rolling),
> the actions will submit to asyncExecutor which will create a new thread for
> every work. That mean the log file will be compressed by the two actions. Is
> this the cause?
> Thanks.
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