--- a/src/share/classes/sun/management/LazyCompositeData.java	Tue Jan 17 15:55:40 2012 -0800
+++ b/src/share/classes/sun/management/LazyCompositeData.java	Fri Jul 07 19:53:38 2017 +0100
@@ -27,6 +27,7 @@
 
 import java.io.Serializable;
 import java.util.*;
+import javax.management.openmbean.ArrayType;
 import javax.management.openmbean.CompositeData;
 import javax.management.openmbean.CompositeType;
 import javax.management.openmbean.OpenType;
@@ -48,39 +49,48 @@
     private CompositeData compositeData;
 
     // Implementation of the CompositeData interface
+    @Override
     public boolean containsKey(String key) {
         return compositeData().containsKey(key);
     }
 
+    @Override
     public boolean containsValue(Object value) {
         return compositeData().containsValue(value);
     }
 
+    @Override
     public boolean equals(Object obj) {
         return compositeData().equals(obj);
     }
 
+    @Override
     public Object get(String key) {
         return compositeData().get(key);
     }
 
+    @Override
     public Object[] getAll(String[] keys) {
         return compositeData().getAll(keys);
     }
 
+    @Override
     public CompositeType getCompositeType() {
         return compositeData().getCompositeType();
     }
 
+    @Override
     public int hashCode() {
         return compositeData().hashCode();
     }
 
+    @Override
     public String toString() {
         /** FIXME: What should this be?? */
         return compositeData().toString();
     }
 
+    @Override
     public Collection<?> values() {
         return compositeData().values();
     }
@@ -126,27 +136,31 @@
         if (cd == null)
             throw new IllegalArgumentException("Null CompositeData");
 
-        return ((Boolean) cd.get(itemName)).booleanValue();
+        return ((Boolean) cd.get(itemName));
     }
 
     static long getLong(CompositeData cd, String itemName) {
         if (cd == null)
             throw new IllegalArgumentException("Null CompositeData");
 
-        return ((Long) cd.get(itemName)).longValue();
+        return ((Long) cd.get(itemName));
     }
 
     static int getInt(CompositeData cd, String itemName) {
         if (cd == null)
             throw new IllegalArgumentException("Null CompositeData");
 
-        return ((Integer) cd.get(itemName)).intValue();
+        return ((Integer) cd.get(itemName));
     }
 
     /**
      * Compares two CompositeTypes and returns true if
      * all items in type1 exist in type2 and their item types
      * are the same.
+     * @param type1 the base composite type
+     * @param type2 the checked composite type
+     * @return {@code true} if all items in type1 exist in type2 and their item
+     *         types are the same.
      */
     protected static boolean isTypeMatched(CompositeType type1, CompositeType type2) {
         if (type1 == type2) return true;
@@ -160,19 +174,7 @@
             return false;
 
         for (String item: allItems) {
-            OpenType<?> ot1 = type1.getType(item);
-            OpenType<?> ot2 = type2.getType(item);
-            if (ot1 instanceof CompositeType) {
-                if (! (ot2 instanceof CompositeType))
-                    return false;
-                if (!isTypeMatched((CompositeType) ot1, (CompositeType) ot2))
-                    return false;
-            } else if (ot1 instanceof TabularType) {
-                if (! (ot2 instanceof TabularType))
-                    return false;
-                if (!isTypeMatched((TabularType) ot1, (TabularType) ot2))
-                    return false;
-            } else if (!ot1.equals(ot2)) {
+            if (!isTypeMatched(type1.getType(item), type2.getType(item))) {
                 return false;
             }
         }
@@ -192,5 +194,41 @@
         return isTypeMatched(type1.getRowType(), type2.getRowType());
     }
 
+    protected static boolean isTypeMatched(ArrayType<?> type1, ArrayType<?> type2) {
+        if (type1 == type2) return true;
+
+        int dim1 = type1.getDimension();
+        int dim2 = type2.getDimension();
+
+        // check if the array dimensions are the same
+        if (dim1 != dim2)
+            return false;
+
+        return isTypeMatched(type1.getElementOpenType(), type2.getElementOpenType());
+    }
+
+    private static boolean isTypeMatched(OpenType<?> ot1, OpenType<?> ot2) {
+        if (ot1 instanceof CompositeType) {
+            if (! (ot2 instanceof CompositeType))
+                return false;
+            if (!isTypeMatched((CompositeType) ot1, (CompositeType) ot2))
+                return false;
+        } else if (ot1 instanceof TabularType) {
+            if (! (ot2 instanceof TabularType))
+                return false;
+            if (!isTypeMatched((TabularType) ot1, (TabularType) ot2))
+                return false;
+        } else if (ot1 instanceof ArrayType) {
+            if (! (ot2 instanceof ArrayType))
+                return false;
+            if (!isTypeMatched((ArrayType<?>) ot1, (ArrayType<?>) ot2)) {
+                return false;
+            }
+        } else if (!ot1.equals(ot2)) {
+            return false;
+        }
+        return true;
+    }
+
     private static final long serialVersionUID = -2190411934472666714L;
 }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/sun/management/LazyCompositeDataTest.java	Fri Jul 07 19:53:38 2017 +0100
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.util.HashMap;
+import java.util.Map;
+import javax.management.openmbean.ArrayType;
+import javax.management.openmbean.CompositeData;
+import javax.management.openmbean.CompositeDataSupport;
+import javax.management.openmbean.CompositeType;
+import javax.management.openmbean.OpenDataException;
+import javax.management.openmbean.OpenType;
+import javax.management.openmbean.SimpleType;
+import sun.management.LazyCompositeData;
+
+/**
+ * @test
+ * @bug 8139870
+ * @summary sun.management.LazyCompositeData.isTypeMatched() fails for composite types with items of ArrayType
+ * @modules java.management/sun.management
+ * @author Jaroslav Bachorik
+ */
+
+public class LazyCompositeDataTest {
+    private final static CompositeData dataV1, dataV2;
+
+    static {
+        try {
+            // ***
+            // prepare the composite types
+
+            // composite type stored in an array; V1
+            CompositeType subtypeV1 = new CompositeType(
+                    "Subtype1",
+                    "Version 1",
+                    new String[]{"item1"},
+                    new String[]{"Item 1"},
+                    new OpenType<?>[]{
+                        SimpleType.STRING
+                    }
+            );
+
+            // composite type stored in an array; V2
+            CompositeType subtypeV2 = new CompositeType(
+                    "Subtype2",
+                    "Version 2",
+                    new String[]{"item1", "item2"},
+                    new String[]{"Item 1", "Item 2"},
+                    new OpenType<?>[]{
+                        SimpleType.STRING,
+                        SimpleType.INTEGER
+                    }
+            );
+
+
+            // main composite type; V1
+            // one of the items is array of 'subtypeV1' instances
+            CompositeType typeV1 = new CompositeType(
+                    "MyDataV1",
+                    "Version 1",
+                    new String[]{"item1", "item2"},
+                    new String[]{"Item 1", "Item 2"},
+                    new OpenType<?>[]{
+                        SimpleType.STRING,
+                        ArrayType.getArrayType(subtypeV1)
+                    }
+            );
+
+            // main composite type; V2
+            // one of the items is array of 'subtypeV2' instances
+            CompositeType typeV2 = new CompositeType(
+                    "MyDataV2",
+                    "Version 2",
+                    new String[]{"item1", "item2"},
+                    new String[]{"Item 1", "Item 2"},
+                    new OpenType<?>[]{
+                        SimpleType.STRING,
+                        ArrayType.getArrayType(subtypeV2)
+                    }
+            );
+            // ***
+
+            // ***
+            // construct the data
+            Map<String, Object> subitemsV1 = new HashMap<>();
+            Map<String, Object> subitemsV2 = new HashMap<>();
+
+            Map<String, Object> itemsV1 = new HashMap<>();
+            Map<String, Object> itemsV2 = new HashMap<>();
+
+            subitemsV1.put("item1", "item1");
+            subitemsV2.put("item1", "item1");
+            subitemsV2.put("item2", 42);
+
+            itemsV1.put("item1", "item1");
+            itemsV1.put("item2", new CompositeData[]{new CompositeDataSupport(subtypeV1, subitemsV1)});
+
+            itemsV2.put("item1", "item1");
+            itemsV2.put("item2", new CompositeData[]{new CompositeDataSupport(subtypeV2, subitemsV2)});
+
+            dataV1 = new CompositeDataSupport(typeV1, itemsV1);
+            dataV2 = new CompositeDataSupport(typeV2, itemsV2);
+            // ***
+        } catch (OpenDataException e) {
+            throw new Error(e);
+        }
+    }
+
+    private static class MyDataV1 extends LazyCompositeData {
+        @Override
+        protected CompositeData getCompositeData() {
+            return dataV1;
+        }
+
+        public boolean isTypeMached(CompositeType type) {
+            return isTypeMatched(this.getCompositeType(), type);
+        }
+    }
+
+    private static class MyDataV2 extends LazyCompositeData {
+        @Override
+        protected CompositeData getCompositeData() {
+            return dataV2;
+        }
+
+    }
+
+    public static void main(String[] args) throws Exception {
+        System.out.println("Checking LazyCompositeData.isTypeMatched()");
+        MyDataV1 v1 = new MyDataV1();
+        MyDataV2 v2 = new MyDataV2();
+
+        if (!v1.isTypeMached(v2.getCompositeType())) {
+            System.err.println("=== FAILED");
+            System.err.println("V1 should be matched by V2");
+            System.err.println("\n=== V1");
+            System.err.println(v1.getCompositeType());
+            System.err.println("\n=== V2");
+            System.err.println(v2.getCompositeType());
+            throw new Error();
+        }
+        System.out.println("=== PASSED");
+    }
+}
\ No newline at end of file