hbase的regionserver宕机

错误日志：

regionserver.HRegionServer: Failed deleting my ephemeral node
zookeeper.RecoverableZooKeeper: ZooKeeper delete failed after 4 attempts

解决：

apt-get install ntp

错误：
zookeeper session超时问题

配置：hbase-site.xml

<property>
    <name>zookeeper.session.timeout</name>
    <value>300000</value>
  </property>
  <property>
    <name>hbase.regionserver.restart.on.zk.expire</name>
    <value>true</value>
  </property>
  <property>
    <name>hbase.regionserver.handler.count</name>
    <value>100</value>
  </property>

启动zk方式为：hbase-daemon.sh start zookeeper