Merge branch 'NIFI164' into bootstrap

nar-bundles/framework-bundle/framework/core/src/main/java/org/apache/nifi/controller/FlowController.java

@@ -1050,6 +1050,10 @@ public class FlowController implements EventAccess, ControllerServiceProvider, H
             	processScheduler.shutdown();
             }
             
+            if ( contentRepository != null ) {
+                contentRepository.shutdown();
+            }
+            
             if ( provenanceEventRepository != null ) {
             	try {
             		provenanceEventRepository.close();

nar-bundles/framework-bundle/framework/core/src/main/java/org/apache/nifi/controller/repository/FileSystemRepository.java

@@ -223,6 +223,12 @@ public class FileSystemRepository implements ContentRepository {
         this.contentClaimManager = claimManager;
     }
 
+    @Override
+    public void shutdown() {
+        executor.shutdown();
+        containerCleanupExecutor.shutdown();
+    }
+    
     private static double getRatio(final String value) {
         final String trimmed = value.trim();
         final String percentage = trimmed.substring(0, trimmed.length() - 1);

nar-bundles/framework-bundle/framework/core/src/main/java/org/apache/nifi/controller/repository/VolatileContentRepository.java

@@ -138,6 +138,11 @@ public class VolatileContentRepository implements ContentRepository {
         this.claimManager = claimManager;
     }
     
+    @Override
+    public void shutdown() {
+        executor.shutdown();
+    }
+
     /**
      * Specifies a Backup Repository where data should be written if this
      * Repository fills up

nifi-api/src/main/java/org/apache/nifi/controller/repository/ContentRepository.java

@@ -45,6 +45,12 @@ public interface ContentRepository {
      */
     void initialize(ContentClaimManager claimManager) throws IOException;
 
+    /**
+     * Shuts down the Content Repository, freeing any resources that may be held.
+     * This is called when an administrator shuts down NiFi.
+     */
+    void shutdown();
+    
     /**
      * Returns the names of all Containers that exist for this Content
      * Repository