YARN-7381. Enable the configuration: yarn.nodemanager.log-container-debug-info.enabled by default in yarn-default.xml. (Xuan Gong via wangda)

Change-Id: I1ed58dafad5cc276eea5c0b0813cf04f57d73a87
(cherry picked from commit 0311cf05358cd75388f48f048c44fba52ec90f00)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java

@@ -142,7 +142,7 @@ public class YarnConfiguration extends Configuration {
   public static final String NM_LOG_CONTAINER_DEBUG_INFO =
       YarnConfiguration.NM_PREFIX + "log-container-debug-info.enabled";
 
-  public static final boolean DEFAULT_NM_LOG_CONTAINER_DEBUG_INFO = false;
+  public static final boolean DEFAULT_NM_LOG_CONTAINER_DEBUG_INFO = true;
 
   ////////////////////////////////
   // IPC Configs

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml

@@ -1250,7 +1250,7 @@
     slowness in launching containers.
     </description>
     <name>yarn.nodemanager.log-container-debug-info.enabled</name>
-    <value>false</value>
+    <value>true</value>
   </property>
 
   <property>