YARN-9349. Improved log level practices for InvalidStateTransitionException.

            Contributed by Anuhan Torgonshar

(cherry picked from commit fe2370e039e1ee980d74769ae85d67434e0993cf)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/application/ApplicationImpl.java

@@ -646,7 +646,7 @@ public class ApplicationImpl implements Application {
         // queue event requesting init of the same app
         newState = stateMachine.doTransition(event.getType(), event);
       } catch (InvalidStateTransitionException e) {
-        LOG.warn("Can't handle this event at current state", e);
+        LOG.error("Can't handle this event at current state", e);
       }
       if (newState != null && oldState != newState) {
         LOG.info("Application " + applicationID + " transitioned from "

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/container/ContainerImpl.java

@@ -2125,7 +2125,7 @@ public class ContainerImpl implements Container {
         newState =
             stateMachine.doTransition(event.getType(), event);
       } catch (InvalidStateTransitionException e) {
-        LOG.warn("Can't handle this event at current state: Current: ["
+        LOG.error("Can't handle this event at current state: Current: ["
             + oldState + "], eventType: [" + event.getType() + "]," +
             " container: [" + containerID + "]", e);
       }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/LocalizedResource.java

@@ -196,7 +196,7 @@ public class LocalizedResource implements EventHandler<ResourceEvent> {
       try {
         newState = this.stateMachine.doTransition(event.getType(), event);
       } catch (InvalidStateTransitionException e) {
-        LOG.warn("Can't handle this event at current state", e);
+        LOG.error("Can't handle this event at current state", e);
       }
       if (newState != null && oldState != newState) {
         LOG.debug("Resource {}{} size : {} transitioned from {} to {}",