问题描述
我想将 Java 与 Hbase 连接,但出现错误: java.lang.IllegalArgumentException:无法规范地址
localhost/<unresolved>:2222 because it's not resolvable
at org.apache.zookeeper.SaslServerPrincipal.getServerPrincipal(SaslServerPrincipal.java:65)
at org.apache.zookeeper.SaslServerPrincipal.getServerPrincipal(SaslServerPrincipal.java:41)
at org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1001)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)
这是我的代码:
Configuration conf = HBaseConfiguration.create();
conf.set("hbase.zookeeper.quorum","localhost");
conf.set("hbase.rootdir","hdfs://localhost:9000/hbase");
conf.set("hbase.cluster.distributed","hbase.cluster.distributed");
conf.set("hbase.zookeeper.property.clientPort","2222");
conf.set("hbase.zookeeper.property.dataDir","/home/trannguyenhan/app/hbase-2.4.2/zookeeper");
conf.set("dfs.replication","1");
HTable htable = new HTable(conf,"demo");
Put p = new Put(Bytes.toBytes("row1"));
p.add(Bytes.toBytes("demo_column"),Bytes.toBytes("name"),Bytes.toBytes("Nguyen Quang Huy"));
htable.put(p);
htable.close();
我的配置与文件hbase-site.xml 中的配置相同。 能帮帮我吗,谢谢。
解决方法
确保zookeeper运行在2222端口,因为Zookeeper客户端默认端口是2181。
telnet 本地主机 2222
要让 HBase 管理节点上的 ZooKeeper 仲裁,绑定到端口 2222(默认为 2181),请确保 HBASE_MANAGE_ZK
在 conf/hbase-env.sh
中被注释掉或设置为 true,然后编辑 conf/hbase-site.xml
并设置 hbase.zookeeper.property.clientPort
和 hbase.zookeeper.quorum
。
hbase-site.xml 示例
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
<property>
<name>hbase.tmp.dir</name>
<value>./tmp</value>
</property>
<property>
<name>hbase.rootdir</name>
<value>hdfs://server1:9000/hbase</value>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>zkserver1,zkserver2,zkserver3</value>
</property>
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2222</value>
</property>
此外,您必须将 hbase.cluster.distributed
设置为 true
NOT hbase.cluster.distributed
。
改变
conf.set("hbase.cluster.distributed","hbase.cluster.distributed");
到
conf.set("hbase.cluster.distributed","true");