Remove redundant mdc keys and rename to match josdk mdc pattern

spark-operator/src/main/java/org/apache/spark/kubernetes/operator/utils/LoggingUtils.java

@@ -22,39 +22,26 @@
 import java.util.Set;
 import java.util.concurrent.locks.ReentrantLock;
 
-import org.apache.commons.lang3.StringUtils;
 import org.slf4j.MDC;
 
 import org.apache.spark.kubernetes.operator.SparkApplication;
+import org.apache.spark.kubernetes.operator.status.ApplicationAttemptSummary;
 
 public class LoggingUtils {
   public static final class TrackedMDC {
-    public static final String NamespaceKey = "app_namespace";
-    public static final String NameKey = "app_name";
-    public static final String UuidKey = "app_uuid";
-    public static final String GenerationKey = "app_generation";
+    public static final String AppAttemptIdKey = "resource.app.attemptId";
     private final ReentrantLock lock = new ReentrantLock();
     private Set<String> keys = new HashSet<>();
 
     public void set(final SparkApplication application) {
-      if (application != null && application.getMetadata() != null) {
+      if (application != null && application.getStatus() != null) {
         try {
           lock.lock();
-          if (StringUtils.isNotEmpty(application.getMetadata().getNamespace())) {
-            MDC.put(NamespaceKey, application.getMetadata().getNamespace());
-            keys.add(NamespaceKey);
+          ApplicationAttemptSummary summary = application.getStatus().getCurrentAttemptSummary();
+          if (summary != null && summary.getAttemptInfo() != null) {
+            MDC.put(AppAttemptIdKey, summary.getAttemptInfo().getId().toString());
+            keys.add(AppAttemptIdKey);
           }
-          if (StringUtils.isNotEmpty(application.getMetadata().getName())) {
-            MDC.put(NameKey, application.getMetadata().getName());
-            keys.add(NameKey);
-          }
-          if (StringUtils.isNotEmpty(application.getMetadata().getUid())) {
-            MDC.put(UuidKey, application.getMetadata().getUid());
-            keys.add(UuidKey);
-          }
-          MDC.put(GenerationKey,
-              String.valueOf(application.getMetadata().getGeneration()));
-          keys.add(GenerationKey);
         } finally {
           lock.unlock();
         }