Randall Hauch created KAFKA-7009:
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Summary: Mute logger for reflections.org at the warn level in
system tests
Key: KAFKA-7009
URL: https://issues.apache.org/jira/browse/KAFKA-7009
Project: Kafka
Issue Type: Improvement
Components: KafkaConnect, system tests
Affects Versions: 1.1.0
Reporter: Randall Hauch
Assignee: Randall Hauch
Fix For: 2.0.0
AK's Log4J configuration file for Connect includes [these
lines|https://github.com/apache/kafka/blob/trunk/config/connect-log4j.properties#L25]:
{code}
log4j.logger.org.apache.zookeeper=ERROR
log4j.logger.org.I0Itec.zkclient=ERROR
log4j.logger.org.reflections=ERROR
{code}
The last one suppresses lots of Reflections warnings like the following that
are output during classpath scanning and are harmless:
{noformat}
[2018-06-06 13:52:39,448] WARN could not create Vfs.Dir from url. ignoring the
exception and continuing (org.reflections.Reflections)
org.reflections.ReflectionsException: could not create Vfs.Dir from url, no
matching UrlType was found
[file:/usr/bin/../share/java/confluent-support-metrics/*]
either use fromURL(final URL url, final List<UrlType> urlTypes) or use the
static setDefaultURLTypes(final List<UrlType> urlTypes) or
addDefaultURLTypes(UrlType urlType) with your specialized UrlType.
at org.reflections.vfs.Vfs.fromURL(Vfs.java:109)
at org.reflections.vfs.Vfs.fromURL(Vfs.java:91)
at org.reflections.Reflections.scan(Reflections.java:240)
at
org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader$InternalReflections.scan(DelegatingClassLoader.java:373)
at org.reflections.Reflections$1.run(Reflections.java:198)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
{noformat}
The last line also need to be added to [Connect's Log4J configuration file in
the AK system
tests|https://github.com/apache/kafka/blob/trunk/tests/kafkatest/services/templates/connect_log4j.properties.
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