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https://issues.apache.org/jira/browse/FLUME-2050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16243409#comment-16243409
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ASF subversion and git services commented on FLUME-2050:
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Commit 4bb5e88eccf7e9676eb527bd0fa7ecfc9bce50f2 in flume's branch
refs/heads/flume-2050 from [~ralphgoers]
[ https://git-wip-us.apache.org/repos/asf?p=flume.git;h=4bb5e88 ]
FLUME-2050 - modify pattern layout so NDC is ignored if it has no data
> Upgrade to log4j2 (when GA)
> ---------------------------
>
> Key: FLUME-2050
> URL: https://issues.apache.org/jira/browse/FLUME-2050
> Project: Flume
> Issue Type: Improvement
> Reporter: Edward Sargisson
> Attachments: FLUME-2050.patch
>
>
> Log4j1 is being abandoned in favour of log4j2. Log4j2, by all that I've seen,
> has better concurrency handling and the Log4j2 FlumeAppender is nice (easily
> configurable, 3 different styles of agents).
> Log4j1 has a concurrency defect which means that rolling over a log file into
> a directory for the Flume spool directory source will not be reliable. Log4j2
> has fixed this.
> Alternatively the log4j2 FlumeAppender may allow Flume to log its own logs
> via itself.
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