hadoop常见错误

1：org.apache.hadoop.security.AccessControlException: org.apache.hadoop.security.AccessControlException:
Can't continue with getBlockLocalPathInfo() authorization. The user admin is not allowed to call getBlockLocalPathInfo

vi conf/hdfs-site.xml
<configuration>

//ClientDatanodeProtocol 调用getBlockLocalPathInfo的时候会抛出

//org.apache.hadoop.security.AccessControlException: org.apache.hadoop.security.AccessControlException:

<property>
<name>dfs.block.local-path-access.user</name>
<value>lv</value>
</property>

2：org.apache.hadoop.ipc.RemoteException: java.io.IOException: java.lang.NullPointerException

如果要传递path为字符串，不应该包含hdfs://namenode前缀