chesnokoff commented on code in PR #11615:
URL: https://github.com/apache/ignite/pull/11615#discussion_r1834361455


##########
modules/core/src/test/java/org/apache/ignite/logger/java/JavaLoggerTest.java:
##########
@@ -84,4 +207,13 @@ public void testLogInitialize() throws Exception {
         assert !log.fileName().contains("%");
         assert log.fileName().contains("other-app");
     }
+
+    /**
+     * Configure java.util.logging.config.file property
+     */
+    private void setJavaLoggerConfig() throws IOException {
+        File file = new File(U.getIgniteHome(), LOG_CONFIG_DEBUG);
+        System.setProperty("java.util.logging.config.file", file.getPath());
+        LogManager.getLogManager().readConfiguration();

Review Comment:
   The problem is that LogManager reads the property when `Logger.getLogger` 
method is called.
   
   Firstly, it happens because JavaLoggerTest extends GridCommonAbstractTest 
which initialize IgniteUtils and IgniteUtils calls Logger.getLogger
   
   Secondly, U.getIgniteHome() also calls initialization of IgniteUtils and it 
calls `Logger.getLogger` again.
   
   So `Logger.getLogger` is called before setProperty and that's why jul won't 
read this property without explicit configuration.
   
   
https://github.com/apache/ignite/blob/67e28313e9ad01033d747e79d0bd9e121b22ad49/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java#L319



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