[GitHub] [spark] LuciferYang commented on a change in pull request #35095: [SPARK-37805][TESTS] Refactor `TestUtils#configTestLog4j` method to use log4j2 api

[GitBox <gi...@apache.org>]

LuciferYang commented on a change in pull request #35095:
URL: https://github.com/apache/spark/pull/35095#discussion_r778515785



##########
File path: core/src/main/scala/org/apache/spark/TestUtils.scala
##########
@@ -418,17 +419,18 @@ private[spark] object TestUtils {
   }
 
   /**
-   * config a log4j properties used for testsuite
+   * config a log4j2 properties used for testsuite
    */
-  def configTestLog4j(level: String): Unit = {
-    val pro = new Properties()
-    pro.put("log4j.rootLogger", s"$level, console")
-    pro.put("log4j.appender.console", "org.apache.log4j.ConsoleAppender")
-    pro.put("log4j.appender.console.target", "System.err")
-    pro.put("log4j.appender.console.layout", "org.apache.log4j.PatternLayout")
-    pro.put("log4j.appender.console.layout.ConversionPattern",
-      "%d{yy/MM/dd HH:mm:ss} %p %c{1}: %m%n")
-    PropertyConfigurator.configure(pro)
+  def configTestLog4j2(level: String): Unit = {
+    val builder = ConfigurationBuilderFactory.newConfigurationBuilder()
+    val appenderBuilder = builder.newAppender("console", "CONSOLE")
+      .addAttribute("target", ConsoleAppender.Target.SYSTEM_ERR)
+    appenderBuilder.add(builder.newLayout("PatternLayout")
+      .addAttribute("pattern", "%d{yy/MM/dd HH:mm:ss} %p %c{1}: %m%n"))
+    builder.add(appenderBuilder)
+    builder.add(builder.newRootLogger(s"$level").add(builder.newAppenderRef("console")))
+    val configuration = builder.build()
+    LogManager.getContext(false).asInstanceOf[LoggerContext].reconfigure(configuration)

Review comment:
       I traced back to the original pr ([SPARK-3193](https://github.com/apache/spark/pull/2108)) it seems that `configTestLog4j ` is only added to help troubleshoot the failed UT on Jenkins.
   
   I agree to remove this method directly, what do you think @dongjoon-hyun ?
   
   
   




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