我只是尝试使用 java 客户端连接到作为 cloudera-vm 一部分的 hbase。
（192.168.56.102是vm的inet ip）
我使用具有仅主机网络设置的虚拟机。
这样我就可以访问hbase master的webUI了@http: //192.168.56.102 :60010/master.jsp
我的 java 客户端（在 vm 本身上运行良好）也建立了与 192.168.56.102:2181 的连接
但是当它调用getMaster我得到连接被拒绝查看日志：
11/09/14 11:19:30 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=192.168.56.102:2181 sessionTimeout=180000 watcher=hconnection
11/09/14 11:19:30 INFO zookeeper.ClientCnxn: Opening socket connection to server /192.168.56.102:2181
11/09/14 11:19:30 INFO zookeeper.ClientCnxn: Socket connection established to cloudera-vm/192.168.56.102:2181, initiating session
11/09/14 11:19:30 INFO zookeeper.ClientCnxn: Session establishment complete on server cloudera-vm/192.168.56.102:2181, sessionid = 0x13267157f930009, negotiated timeout = 40000
11/09/14 11:19:32 INFO client.HConnectionManager$HConnectionImplementation: getMaster attempt 0 of 10 failed; retrying after sleep of 1000
java.net.ConnectException: Connection refused: no further information
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:404)
at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClient.java:311)
at org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:865)
at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:732)
at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257)
at $Proxy9.getProtocolVersion(Unknown Source)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:419)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:393)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:444)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getMaster(HConnectionManager.java:358)
at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:90)
at org.datanucleus.store.hbase.HBaseUtils$1.run(HBaseUtils.java:432)
at java.security.AccessController.doPrivileged(Native Method)
at org.datanucleus.store.hbase.HBaseUtils.createSchemaForClass(HBaseUtils.java:428)
at org.datanucleus.store.hbase.HBaseMetaDataListener.loaded(HBaseMetaDataListener.java:74)
at org.datanucleus.store.hbase.HBaseStoreManager.<init>(HBaseStoreManager.java:76)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.datanucleus.plugin.NonManagedPluginRegistry.createExecutableExtension(NonManagedPluginRegistry.java:677)
at org.datanucleus.plugin.PluginManager.createExecutableExtension(PluginManager.java:287)
at org.datanucleus.NucleusContext.createStoreManagerForProperties(NucleusContext.java:453)
at org.datanucleus.NucleusContext.initialise(NucleusContext.java:264)
at org.datanucleus.api.jpa.JPAEntityManagerFactory.initialiseNucleusContext(JPAEntityManagerFactory.java:746)
at org.datanucleus.api.jpa.JPAEntityManagerFactory.<init>(JPAEntityManagerFactory.java:422)
at org.datanucleus.api.jpa.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:91)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:150)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:70)
at de.syrtec.jpa2hbase.start.TestDAO.main(TestDAO.java:13)
hbase-site.xml：
<configuration>
<property>
<name>hbase.zookeeper.quorum</name>
<value>192.168.56.102</value>
</property>
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2181</value>
</property>
<property>
<name>hbase.master</name>
<value>192.168.56.102:60010</value>
</property>
</configuration>
持久性.xml：
<persistence
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
version="1.0">
<persistence-unit name="hbase-addressbook"
transaction-type="RESOURCE_LOCAL">
<properties>
<property name="datanucleus.ConnectionURL" value="hbase:192.168.56.102:60010" />
<property name="datanucleus.ConnectionUserName" value="" />
<property name="datanucleus.ConnectionPassword" value="" />
<property name="datanucleus.autoCreateSchema" value="true" />
<property name="datanucleus.validateTables" value="false" />
<property name="datanucleus.Optimistic" value="false" />
<property name="datanucleus.validateConstraints" value="false" />
</properties>
</persistence-unit>
</persistence>
测试DAO.java：
public class TestDAO {
public static void main(String[] args) {
EntityManagerFactory emf = Persistence.createEntityManagerFactory("hbase-addressbook");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = null;
Account a2 = new Account("myPre3", "mySur3", 2, new Login("e", "f"));
tx = em.getTransaction();
tx.begin();
em.persist(a2);
tx.commit();
}
}
只是添加了在 VM 上运行的网络服务（netstat -ntpl）：
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 563/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 909/cupsd
tcp 0 0 0.0.0.0:8088 0.0.0.0:* LISTEN 2004/python2.6
tcp 0 0 127.0.0.1:8001 0.0.0.0:* LISTEN 2345/python2.6
tcp6 0 0 :::39087 :::* LISTEN 1327/java
tcp6 0 0 :::54162 :::* LISTEN 1411/java
tcp6 0 0 127.0.0.1:8020 :::* LISTEN 1411/java
tcp6 0 0 127.0.0.1:8021 :::* LISTEN 1327/java
tcp6 0 0 :::50070 :::* LISTEN 1411/java
tcp6 0 0 :::22 :::* LISTEN 563/sshd
tcp6 0 0 ::1:631 :::* LISTEN 909/cupsd
tcp6 0 0 :::11000 :::* LISTEN 2077/java
tcp6 0 0 :::43738 :::* LISTEN 858/java
tcp6 0 0 :::50010 :::* LISTEN 858/java
tcp6 0 0 :::51258 :::* LISTEN 858/java
tcp6 0 0 :::50075 :::* LISTEN 858/java
tcp6 0 0 :::60030 :::* LISTEN 1726/java
tcp6 0 0 127.0.0.1:44446 :::* LISTEN 1642/java
tcp6 0 0 127.0.1.1:41246 :::* LISTEN 1726/java
tcp6 0 0 :::8002 :::* LISTEN 2009/java
tcp6 0 0 :::8003 :::* LISTEN 2009/java
tcp6 0 0 127.0.1.1:58915 :::* LISTEN 1726/java
tcp6 0 0 :::59203 :::* LISTEN 1491/java
tcp6 0 0 :::50020 :::* LISTEN 858/java
tcp6 0 0 127.0.0.1:8005 :::* LISTEN 2077/java
tcp6 0 0 :::2181 :::* LISTEN 1726/java
tcp6 0 0 :::9290 :::* LISTEN 1327/java
tcp6 0 0 :::60010 :::* LISTEN 1726/java
tcp6 0 0 :::50090 :::* LISTEN 1491/java
tcp6 0 0 :::10090 :::* LISTEN 1411/java
tcp6 0 0 :::50060 :::* LISTEN 1642/java
tcp6 0 0 :::50030 :::* LISTEN 1327/java