title: Connecting to Hbase Mapr using Java
body: <p>Hi I am running the hbase VMWare sandbox MapR-Sandbox-For-Hadoop-3.1.0_VM. I have made no changes to the sandbox. I can access the control panel via browser.  On another linux VM I have eclipse and the hbase client installed.  I have a java program where I want to create a hbase table but I cannot connect. Please help </p>
  
  <p>As you can see below I get an ERROR</p>
  
  <blockquote>
    <p>ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.</p>
  </blockquote>
  
  <p>and then</p>
  
  <blockquote>
    <p>timesorg.apache.hadoop.hbase.MasterNotRunningException: Retried 1 times</p>
  </blockquote>
  
  <p>(see full stacktraace below).</p>
  
  <p>My application uses</p>
  
  <pre><code>System.setProperty("java.library.path", "/opt/mapr/lib");
  conf = HBaseConfiguration.create();  
  conf.set("zookeeper.znode.parent", "/maprdemo");
  conf.set("hbase.zookeeper.quorum", "16.49.150.79");
  conf.set("hbase.zookeeper.property.clientPort", "5181");
  conf.set("hbase.client.retries.number", "2");
  admin = new HBaseAdmin(conf); 
  System.out.println(admin.isMasterRunning());
  </code></pre>
  
  <p>POM includes</p>
  
  <pre><code>&lt;dependency&gt;
      &lt;groupId&gt;org.apache.hbase&lt;/groupId&gt;
      &lt;artifactId&gt;hbase&lt;/artifactId&gt;
      &lt;version&gt;0.94.13-mapr-1401-m7-3.1.0&lt;/version&gt;
  &lt;/dependency&gt;
  </code></pre>
  
  <p>Stacktrace</p>
  
  <pre><code>14/06/09 15:28:11 INFO zookeeper.ClientCnxn: Opening socket connection to server mapr.sandbox.com/16.49.150.79:5181. Will attempt to SASL-authenticate using Login Context section 'Client_simple'
  14/06/09 15:28:11 INFO zookeeper.ClientCnxn: Socket connection established to mapr.sandbox.com/16.49.150.79:5181, initiating session
  14/06/09 15:28:11 INFO zookeeper.ClientCnxn: Session establishment complete on server mapr.sandbox.com/16.49.150.79:5181, sessionid = 0x146807e8acc0090, negotiated timeout = 40000
  14/06/09 15:28:11 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
  14/06/09 15:28:11 INFO client.HConnectionManager$HConnectionImplementation: Closed zookeeper sessionid=0x146807e8acc0090
  14/06/09 15:28:11 INFO zookeeper.ZooKeeper: Session: 0x146807e8acc0090 closed
  14/06/09 15:28:11 INFO zookeeper.ClientCnxn: EventThread shut down
  Retried 1 timesorg.apache.hadoop.hbase.MasterNotRunningException: Retried 1 times
      at org.apache.hadoop.hbase.client.HBaseAdmin.connectWithConfiguration(HBaseAdmin.java:184)
      at org.apache.hadoop.hbase.client.HBaseAdmin$1.connect(HBaseAdmin.java:153)
      at org.apache.hadoop.hbase.client.HBaseAdmin.ensureConnectedToHBase(HBaseAdmin.java:272)
      at org.apache.hadoop.hbase.client.HBaseAdmin.ensureConnectedToHBase(HBaseAdmin.java:247)
      at org.apache.hadoop.hbase.client.HBaseAdmin.isMasterRunning(HBaseAdmin.java:439)
      at com.hp.spark.hbase.test.HBaseTest.testCreateSchema(HBaseTest.java:72)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
      at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
      at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
      at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
      at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
      at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
      at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
      at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
      at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
      at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
  </code></pre>