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https://issues.apache.org/jira/browse/LOG4J2-982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14377613#comment-14377613
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Mikhail Mazurskiy commented on LOG4J2-982:
------------------------------------------

I cannot reproduce it on:
{noformat}
$ mvn -v
Apache Maven 3.3.1 (cab6659f9874fa96462afef40fcf6bc033d58c1c; 
2015-03-14T07:10:27+11:00)
Maven home: /usr/local/Cellar/maven/3.3.1/libexec
Java version: 1.8.0_40, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.10.2", arch: "x86_64", family: "mac"
{noformat}

Could you take a thread dump using {{jstack}} when the build is hanging?

> Use System.nanoTime() to measure time intervals
> -----------------------------------------------
>
>                 Key: LOG4J2-982
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-982
>             Project: Log4j 2
>          Issue Type: Improvement
>          Components: Core, Flume Appender
>            Reporter: Mikhail Mazurskiy
>            Priority: Minor
>         Attachments: LOG4J2-982-v2.patch, LOG4J2-982.patch
>
>
> Unlike {{System.currentTimeMillis()}}, which can jump/slew forward and 
> backwards, {{System.nanoTime()}} is a monotonic clock (at least it should be) 
> and hence it should be used to measure time intervals (timeouts/delays/etc).



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