Prabhu Joseph created YARN-9342:
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Summary: Moving log4j1 to log4j2 in hadoop-yarn
Key: YARN-9342
URL: https://issues.apache.org/jira/browse/YARN-9342
Project: Hadoop YARN
Issue Type: Improvement
Affects Versions: 3.1.2
Reporter: Prabhu Joseph
Assignee: Prabhu Joseph
1. Log4j2 Asynchronous Logging will give significant improvement in the
performance.
2. Log4j2 does not have below locking issue which Log4j1 has.
{code}
"Thread-16" #40 daemon prio=5 os_prio=0 tid=0x00007f181f9bb800 nid=0x125
waiting for monitor entry [0x00007ef163bab000]
java.lang.Thread.State: BLOCKED (on object monitor)
at org.apache.log4j.Category.callAppenders(Category.java:204)
- locked <0x00007ef2d803e2b8> (a org.apache.log4j.spi.RootLogger)
at org.apache.log4j.Category.forcedLog(Category.java:391)
at org.apache.log4j.Category.log(Category.java:856)
at
org.apache.commons.logging.impl.Log4JLogger.info(Log4JLogger.java:176)
{code}
https://bz.apache.org/bugzilla/show_bug.cgi?id=57714
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