Viraj Jasani created HADOOP-18653:
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Summary: LogLevel servlet to determine log impl before using
setLevel
Key: HADOOP-18653
URL: https://issues.apache.org/jira/browse/HADOOP-18653
Project: Hadoop Common
Issue Type: Sub-task
Reporter: Viraj Jasani
Assignee: Viraj Jasani
LogLevel GET API is used to set log level for a given class name dynamically.
While we have cleaned up the commons-logging references, it would be great to
determine whether slf4j log4j adapter is in the classpath before allowing
client to set the log level.
Proposed changes:
* Use slf4j logger factory to get the log reference for the given class name
* Use generic utility to identify if the slf4j log4j adapter is in the
classpath before using log4j API to update the log level
* If the log4j adapter is not in the classpath, report error in the output
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