YARN-7543. Add check for max cpu limit and missing file for YARN service.

            (Contributed by Jian He)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/utils/ServiceApiUtil.java

@@ -330,13 +330,19 @@ public class ServiceApiUtil {
       org.apache.hadoop.yarn.api.records.Resource maxResource,
       Service service) throws YarnException {
     for (Component component : service.getComponents()) {
-      // only handle mem now.
       long mem = Long.parseLong(component.getResource().getMemory());
       if (mem > maxResource.getMemorySize()) {
         throw new YarnException(
-            "Component " + component.getName() + " memory size (" + mem
-                + ") is larger than configured max container memory size ("
-                + maxResource.getMemorySize() + ")");
+            "Component " + component.getName() + ": specified memory size ("
+                + mem + ") is larger than configured max container memory " +
+                "size (" + maxResource.getMemorySize() + ")");
+      }
+      int cpu = component.getResource().getCpus();
+      if (cpu > maxResource.getVirtualCores()) {
+        throw new YarnException(
+            "Component " + component.getName() + ": specified number of " +
+                "virtual core (" + cpu + ") is larger than configured max " +
+                "virtual core size (" + maxResource.getVirtualCores() + ")");
       }
     }
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/utils/ServiceUtils.java

@@ -411,6 +411,10 @@ public final class ServiceUtils {
         return;
       }
       for (File jarFile : listOfJars) {
+        if (!jarFile.exists()) {
+          log.debug("File does not exist, skipping: " + jarFile);
+          continue;
+        }
         LocalResource res = sliderFileSystem.submitFile(jarFile, tempPath, libDir, jarFile.getName());
         providerResources.put(libDir + "/" + jarFile.getName(), res);
       }