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hadoop - hbase master 没有启动

问题描述

我在独立模式下在 Hadoop 上运行 HBase。我已经成功安装了 hadoop、zookeeper 和 hbase，但是在 hbase 中 master 没有启动。下面是我的 hbase-site.xml

<configuration>
  <property>
    <name>hbase.rootdir</name>
    <value>hdfs://localhost:9000/hbase</value>
  </property>
  <property>
    <name>hbase.zookeeper.property.dataDir</name>
    <value>/home/kumar/hdata/zookeeper</value>
  </property>
  <property>
    <name>hbase.zookeeper.property.clientPort</name>
    <value>2181</value>
  </property>
</configuration>

我已经启动了 hadoop 和 zookeeper 服务：

start-all.sh
zkServer.sh start
start-hbase.sh

以及我在 Jps 命令中得到的进程

2133 DataNode
1974 NameNode
2679 NodeManager
2365 SecondaryNameNode
3917 QuorumPeerMain
2527 ResourceManager
3935 Jps

Hbase shell 成功启动，但是当我在 shell 中运行任何命令（如“list”）时，出现以下错误：

ERROR: KeeperErrorCode = NoNode for /hbase/master

之后，我尝试使用以下命令运行 master

hbase master start

我得到以下错误：

    2018-10-15 18:51:51,380 ERROR [main] server.ZooKeeperServer: ZKShutdownHandler is not registered, so ZooKeeper server won't take any action on ERROR or SHUTDOWN server state changes
2018-10-15 18:51:51,437 INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2182] server.NIOServerCnxnFactory: Accepted socket connection from /127.0.0.1:34034
2018-10-15 18:51:51,479 INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2182] server.ServerCnxn: The list of known four letter word commands is : [{1936881266=srvr, 1937006964=stat, 2003003491=wchc, 1685417328=dump, 1668445044=crst, 1936880500=srst, 1701738089=envi, 1668247142=conf, 2003003507=wchs, 2003003504=wchp, 1668247155=cons, 1835955314=mntr, 1769173615=isro, 1920298859=ruok, 1735683435=gtmk, 1937010027=stmk}]
2018-10-15 18:51:51,479 INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2182] server.ServerCnxn: The list of enabled four letter word commands is : [[wchs, stat, stmk, conf, ruok, mntr, srvr, envi, srst, isro, dump, gtmk, crst, cons]]
2018-10-15 18:51:51,479 INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2182] server.NIOServerCnxn: Processing stat command from /127.0.0.1:34034
2018-10-15 18:51:51,485 INFO  [Thread-2] server.NIOServerCnxn: Stat command output
2018-10-15 18:51:51,491 INFO  [main] zookeeper.MiniZooKeeperCluster: Started MiniZooKeeperCluster and ran successful 'stat' on client port=2182
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.
2018-10-15 18:51:51,497 ERROR [main] master.HMasterCommandLine: Master exiting
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:217)
    at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:140)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
    at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:149)
    at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2983)
2018-10-15 18:51:51,500 INFO  [Thread-2] server.NIOServerCnxn: Closed socket connection for client /127.0.0.1:34034 (no session established for client)

我也没有得到任何本地 hbase 网址的响应

localhost:60010

标签： hadoophbaseapache-zookeeper

解决方案

HBase 有一个内置的 Zookeeper 实例，仅用于开发环境，默认情况下，当您通过命令启动 HBase 时，start-hbase.sh它​​也会启动 Zookeeper 守护进程。该错误是因为您已经启动了一个使用该端口的独立 Zookeeper 2181。当您启动 HBase 时，它​​也会尝试在 port 中启动它的内置 zookeeper，2181但它得到了错误！

如果要使用独立的 Zookeeper 组件，首先编辑文件hbase-env.sh并添加以下行：（export HBASE_MANAGES_ZK=false您也可以在文件中搜索 HBASE_MANAGES_ZK 变量并将其设置为false）。所以现在当你启动 HBase 时，它​​只是启动 HBase Daemon 而不再是 Zookeeper。请记住，您应该在 HBase 之前启动 Zookeeper 守护程序。

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