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https://issues.apache.org/jira/browse/KYLIN-1963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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hongbin ma resolved KYLIN-1963.
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Resolution: Fixed
> 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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