hongbin ma created KYLIN-1963:
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Summary: Delegate the loading of certain package (like slf4j) to
tomcat's parent classloader
Key: KYLIN-1963
URL: https://issues.apache.org/jira/browse/KYLIN-1963
Project: Kylin
Issue Type: Improvement
Reporter: hongbin ma
Assignee: hongbin ma
currently we use hbase command to start tomcat, which then starts kylin as a
web application. The default classloader that tomcats assigns to the kylin
applications is WebappClassLoader, which will search local repositories before
parent classloader.
the design will lead to two separate log4j logging instances in both the "HBase
space" and "kylin space", the two loggers will attempt to write to the same
file, which is problematic according to official documents
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