My hbase cluster have 1 master & 2 regional servers (running in fully distributed mode). I am able to connect & create table using hbase shell.

However, when using java client connect to the cluster, I got below error:

6:20:10 INFO zookeeper.ZooKeeper: Client environment:zookeeper.version=3.4.6-1569965, built on 02/20/2014 09:09 GMT
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:host.name=master
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:java.version=1.7.0_51
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:java.vendor=Oracle Corporation
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:java.home=/usr/java/jdk1.7.0_51/jre
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:java.class.path=/usr/local/apache-maven/boot/plexus-classworlds-2.4.jar
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:java.io.tmpdir=/tmp
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:java.compiler=<NA>
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:os.name=Linux
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:os.arch=amd64
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:os.version=2.6.32-504.el6.x86_64
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:user.name=steven.tran
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:user.home=/home/JOBST/steven.tran
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Client environment:user.dir=/home/JOBST/steven.tran/asas
15/09/20 16:20:10 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=10.10.40.17:2181 sessionTimeout=90000 watcher=hconnection-0xa92b535, quorum=10.10.40.17:2181, baseZNode=/hbase
15/09/20 16:20:10 INFO zookeeper.ClientCnxn: Opening socket connection to server 10.10.40.17/10.10.40.17:2181. Will not attempt to authenticate using SASL (unknown error)
15/09/20 16:20:10 INFO zookeeper.ClientCnxn: Socket connection established to 10.10.40.17/10.10.40.17:2181, initiating session
15/09/20 16:20:10 INFO zookeeper.ClientCnxn: Session establishment complete on server 10.10.40.17/10.10.40.17:2181, sessionid = 0x14fdfa7a8ec003a, negotiated timeout = 40000
Creating table. 15/09/20 16:21:11 INFO client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x14fdfa7a8ec003a
15/09/20 16:21:11 INFO zookeeper.ZooKeeper: Session: 0x14fdfa7a8ec003a closed
15/09/20 16:21:11 INFO zookeeper.ClientCnxn: EventThread shut down
[WARNING]
java.lang.reflect.InvocationTargetException
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.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:293)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the locations
at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:307)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:131)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:56)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:287)
at org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:267)
at org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:139)
at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:134)
at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:825)
at org.apache.hadoop.hbase.MetaTableAccessor.fullScan(MetaTableAccessor.java:606)
at org.apache.hadoop.hbase.MetaTableAccessor.tableExists(MetaTableAccessor.java:370)
at org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:281)
at HbaseTest.createOrOverwrite(HbaseTest.java:22)
at HbaseTest.createSchemaTables(HbaseTest.java:37)
at HbaseTest.main(HbaseTest.java:45)

According to the log, it seem that the java client successfully connected to the zookeeper. Kindly seeking your help.