hbase启动时zookeeper不能启动的问题

前几天虚拟机挂了，重新弄好后发现hadoop集群能正常启动，hbase却不能，原因是zookeeper没法启动，查看zookeeper的日志，错误如下：

java.lang.RuntimeException: Unable to run quorum server
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:454)
        at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:409)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:151)
        at org.apache.hadoop.hbase.zookeeper.HQuorumPeer.runZKServer(HQuorumPeer.java:80)
        at org.apache.hadoop.hbase.zookeeper.HQuorumPeer.main(HQuorumPeer.java:70)
Caused by: java.io.IOException: Failed to process transaction type: 1 error: KeeperErrorCode = NoNode for /hbase
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:153)
        at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223)
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:417)
        ... 4 more
Caused by: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /hbase
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.processTransaction(FileTxnSnapLog.java:211)
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:151)
        ... 6 more

解决方案：

1. 建立一个hbase的临时目录，比如/home/hadoop/tmp；

2. 修改hbase-site.xml文件，将上述临时目录加入配置文件中：

<property>
    <name>hbase.tmp.dir</name>
    <value>/home/hadoop/tmp</value>
</property>