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https://issues.apache.org/jira/browse/KYLIN-5093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17420290#comment-17420290
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Xiaoxiang Yu commented on KYLIN-5093:
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In Hadoop 3.X env, you may find Kylin didn't print logger output into
'kylin.log', and only part of them exists in 'kylin.out'. This is usually
caused by Slf4j did't work as expected, I suggested you to copy
'log4j-1.2.17.jar' and 'slf4j-log4j12-1.7.25.jar' (these two jars maybe found
under +$SPARK_HOME/jars+) into +$KYLIN_HOME/ext+ and restart Kylin instance.
You can found some output like 'SLF4J: Class path contains multiple SLF4J
bindings.' in 'kylin.out'.
>From
>[https://cwiki.apache.org/confluence/display/KYLIN/Support+Hadoop+Version+Matrix+of+Kylin+4]
> .
> no log file found of Kylin 4.0 spark 3
> ---------------------------------------
>
> Key: KYLIN-5093
> URL: https://issues.apache.org/jira/browse/KYLIN-5093
> Project: Kylin
> Issue Type: Bug
> Environment: Ubuntu 18.04, Hadoop 3.2.0, Hive 3.1.2 Spark 3.1.1
> Reporter: Jinzhong Hou
> Priority: Major
> Attachments: image-2021-09-26-15-29-42-394.png
>
>
> After run kylin.sh start, the web server started successfully, I can access
> the web page.
> But I didn't find "kylin.log" file in log dir. And I searched the whole file
> system, no file named "kylin.log" was found.
> I didn't change any config of kylin.
> !image-2021-09-26-15-29-42-394.png!
>
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