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https://issues.apache.org/jira/browse/HADOOP-18653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17699113#comment-17699113
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ASF GitHub Bot commented on HADOOP-18653:
-----------------------------------------
virajjasani commented on code in PR #5456:
URL: https://github.com/apache/hadoop/pull/5456#discussion_r1132705151
##########
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/GenericsUtil.java:
##########
@@ -103,14 +113,15 @@ public static boolean isLog4jLogger(Class<?> clazz) {
* @return true if the logger uses Log4J implementation.
*/
public static boolean isLog4jLogger(String logger) {
- if (logger == null) {
+ if (logger == null || !IS_LOG4J_LOGGER.get()) {
return false;
}
Logger log = LoggerFactory.getLogger(logger);
try {
Review Comment:
How about this latest commit?
https://github.com/apache/hadoop/pull/5456/commits/c74b7a059a528369ba49ad279880a523d84d75cb
and
https://github.com/apache/hadoop/pull/5456/commits/cfd3e93c6255f04131ffe135134537709d9a144b
> 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
> Priority: Major
> Labels: pull-request-available
>
> 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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