Github user jvz commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/148#discussion_r96145218
--- Diff: conf/log4j2.xml ---
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!-- All loggers are Async if
+
-DLog4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
if is set -->
+<Configuration status="warn" strict="true">
+ <Properties>
+ <Property name="consoleLayoutPattern">%d{ISO8601} [myid:%X{myid}] -
%-5p [%t:%C{1}@%L] - %m%n</Property>
--- End diff --
I'd generally advise against [enabling location
information](http://logging.apache.org/log4j/2.x/manual/layouts.html#LocationInformation)
by default due to performance issues. I personally don't find location
information all that useful outside of caught exceptions anyways.
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