Question

我正在尝试启动hbase master但收到以下错误：

Could not start ZK at requested port of 2181.  ZK was started at port: 2182.  Aborting as clients (e.g. shell) will not be able to find this ZK quorum.
13/07/14 06:33:23 ERROR master.HMasterCommandLine: Failed to start master
java.io.IOException: Could not start ZK at requested port of 2181.  ZK was started at port: 2182.  Aborting as clients (e.g. shell) will not be able to find this ZK quorum.
    at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:134)
    at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:103)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
    at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:76)
    at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1684)
13/07/14 06:33:23 INFO server.NIOServerCnxn: Closed socket connection for client /127.0.0.1:46283 (no session established for client)

hbase-site.xml

<configuration> 
  <!-- Changing the default port for REST since it conflicts with yarn nodemanager --> 
  <property> 
    <name>hbase.rest.port</name> 
    <value>8070</value> 
    <description>The port for the HBase REST server.</description> 
  </property> 
  <property> 
    <name>hbase.rootdir</name> 
    <value>hdfs://localhost:8020/hbase</value> 
  </property> 
</configuration>

Answer 1

似乎其他东西已经在使用端口2181了，或者你可能早先在这个端口上启动了另一个ZK实例。要么停止该过程，要么更改其端口。如果无法做到这一点，请在 hbase-site.xml 中将 hbase.zookeeper.property.clientPort 设置为 2182 。

请注意，即使在独立模式下，HBase也需要ZK的服务，所以你应该确保它运行正常。

HTH

Answer 2

令人惊讶的是，连接到端口2181的权限可能是一个问题，而不是2182.而不是./start-hbase.sh尝试：

sudo ./start-hbase.sh

就我而言，它有所帮助。

Answer 3

在独立模式下启动Hbase时，单个JVM将承载HBase Master，HBase RegionServer和ZooKeeper仲裁对等体。因此，您不需要单独启动ZK实例。

在您的情况下，hbase无法启动ZK，因为另一个实例可能已在端口2181上运行。因此，只需关闭该ZooKeeper实例并重新启动hbase即可。另外，请确保对hbase rootdir具有适当的权限。

Hbase主人无法启动

3 个答案: