2013-06-27 16:14:21,899 FATAL org.apache.Hadoop.hbase.regionserver.HRegionServer: Master rejected startup because clock is out of sync
org.apache.hadoop.hbase.ClockOutOfSyncException: org.apache.hadoop.hbase.ClockOutOfSyncException: Server hadoopslave2,60020,1372320861420 has been rejected; Reported time is too far out of sync with master. Time difference of 143732ms > max allowed of 30000ms
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:95)
at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:79)
at org.apache.hadoop.hbase.regionserver.HRegionServer.reportForDuty(HRegionServer.java:2093)
at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:744)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hbase.ClockOutOfSyncException: Server hadoopslave2,60020,1372320861420 has been rejected; Reported time is too far out of sync with master. Time difference of 143732ms > max allowed of 30000ms
错误点：FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: Master rejected startup because clock is out of sync
org.apache.hadoop.hbase.ClockOutOfSyncException: org.apache.hadoop.hbase.ClockOutOfSyncException: Server hadoopslave2,60020,1372320861420 has been rejected; Reported time is too far out of sync with master. Time difference of 143732ms > max allowed of 30000ms
原因：时间不一致造成的
解决方案1：
配置：hbase.master.maxclockske
<property>
<name>hbase.master.maxclockskew</name>
<value>200000</value>
<description>Time difference of regionserver from master</description>
</property>
解决方案2：
#!/bin/bash
echo "start"
for ((i=211;i<=218;i++))
do
#ssh 192.168.5.${i} 'date 110415402010; clock -w'
ssh 192.168.5.$i 'date -s "2011-05-10 10:44:00"; clock -w'
#ssh 192.168.210.${machine} 'clock -w'
done
echo "complete"