启动hbase出现 java.lang.NoClassDefFoundError: org/apache/zookeeper/KeeperException

在伪分布式下启动hadoop后，启动hbase。

启动前没对关于hbase的环境有关的变量进行配置，

启动如下，出现异常

thinkpad@thinkpad-117f6f ~/hbase-0.94.4

$ bin/start-hbase.sh

localhost: +======================================================================+

localhost: | Error: JAVA_HOME is not set and Java could not be found |

localhost: +----------------------------------------------------------------------+

localhost: | Please download the latest Sun JDK from the Sun Java web site |

localhost: | > http://java.sun.com/javase/downloads/ < |

localhost: | |

localhost: | HBase requires Java 1.6 or later. |

localhost: | NOTE: This script will find Sun Java whether you install using the |

localhost: | binary or the RPM based installer. |

localhost: +======================================================================+

starting master, logging to /home/thinkpad/hbase-0.94.4/bin/../logs/hbase-thinkpad-master-thinkpad-117f6f.out

java.lang.NoClassDefFoundError: org/apache/zookeeper/KeeperException

at java.lang.Class.getDeclaredMethods0(Native Method)

at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)

at java.lang.Class.getMethod0(Class.java:2694)

at java.lang.Class.getMethod(Class.java:1622)

at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)

at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)

Caused by: java.lang.ClassNotFoundException: org.apache.zookeeper.KeeperException

at java.net.URLClassLoader$1.run(URLClassLoader.java:366)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

localhost: +======================================================================+

localhost: | Error: JAVA_HOME is not set and Java could not be found |

localhost: +----------------------------------------------------------------------+

localhost: | Please download the latest Sun JDK from the Sun Java web site |

localhost: | > http://java.sun.com/javase/downloads/ < |

localhost: | |

localhost: | HBase requires Java 1.6 or later. |

localhost: | NOTE: This script will find Sun Java whether you install using the |

localhost: | binary or the RPM based installer. |

localhost: +======================================================================+

可以看出是JAVA_HOME没设置，在网上搜索出了关于的这个问题 见http://stackoverflow.com/questions/10936924/hbase-0-92-standalone-on-windows-with-cygwin

对出现的这个异常回答的很充分。

一定要在hbase-env.sh中添加JAVA_HOME和hbase的classpath两个变量，缺一不可。

export JAVA_HOME="/usr/local/jdk1.7.0_13"

export HBASE_CLASSPATH=/home/thinkpad/hbase-0.94.4/lib/

说明：

下面两个不需要在系统 如.bashrc中设置，也不需要社设置hbase的。

#export HADOOP_HOME="/home/thinkpad/hadoop-1.0.4"

#export PATH=$HADOOP_HOME/bin:$PATH