svn commit: r1077592 [3/3] - in /hadoop/common/branches/branch-0.20-security-patches/src/hdfs/org/apache/hadoop/hdfs/server: datanode/ namenode/

[om...@apache.org]

Added: hadoop/common/branches/branch-0.20-security-patches/src/hdfs/org/apache/hadoop/hdfs/server/namenode/NameNodeMXBean.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-security-patches/src/hdfs/org/apache/hadoop/hdfs/server/namenode/NameNodeMXBean.java?rev=1077592&view=auto
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--- hadoop/common/branches/branch-0.20-security-patches/src/hdfs/org/apache/hadoop/hdfs/server/namenode/NameNodeMXBean.java (added)
+++ hadoop/common/branches/branch-0.20-security-patches/src/hdfs/org/apache/hadoop/hdfs/server/namenode/NameNodeMXBean.java Fri Mar  4 04:32:57 2011
@@ -0,0 +1,43 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hdfs.server.namenode;
+
+/**
+ * 
+ * This is the JMX management interface for namenode information
+ */
+public interface NameNodeMXBean {
+
+  public String getVersion();
+  public String getUsed();
+  public String getFree();
+  public String getTotal();
+  public String getSafemode();
+  public boolean isUpgradeFinalized();
+  public String getNondfs();
+  public String getPercentused();
+  public String getPercentRemaining();
+  public String getTotalblocks();
+  public String getTotalfiles();
+
+
+  // each data node 
+  public String getAliveNodeInfo();
+  public String getDeadNodeInfo();
+  public String getDecomNodeInfo();
+}