[GitHub] [spark] frankliee commented on a diff in pull request #40504: [SPARK-42880][DOCS] Update running-on-yarn.md to log4j2 syntax

["frankliee (via GitHub)" <gi...@apache.org>]

frankliee commented on code in PR #40504:
URL: https://github.com/apache/spark/pull/40504#discussion_r1144154348


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docs/running-on-yarn.md:
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@@ -137,7 +137,7 @@ Note that for the first option, both executors and the application master will s
 log4j configuration, which may cause issues when they run on the same node (e.g. trying to write
 to the same log file).
 
-If you need a reference to the proper location to put log files in the YARN so that YARN can properly display and aggregate them, use `spark.yarn.app.container.log.dir` in your `log4j.properties`. For example, `log4j.appender.file_appender.File=${spark.yarn.app.container.log.dir}/spark.log`. For streaming applications, configuring `RollingFileAppender` and setting file location to YARN's log directory will avoid disk overflow caused by large log files, and logs can be accessed using YARN's log utility.
+If you need a reference to the proper location to put log files in the YARN so that YARN can properly display and aggregate them, use `spark.yarn.app.container.log.dir` in your `log4j.properties`. For example, `appender.spark.fileName=${sys:spark.yarn.app.container.log.dir}/spark.log`. For streaming applications, configuring `RollingFileAppender` and setting file location to YARN's log directory will avoid disk overflow caused by large log files, and logs can be accessed using YARN's log utility.

Review Comment:
   updated



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