Hadoop security File and directory permissions
Permissions for both HDFS and local fileSystem paths
The following table lists various paths on HDFS and local filesystems (on all nodes) and recommended permissions:
| Filesystem | Path | User:Group | Permissions |
|---|---|---|---|
| local | dfs.namenode.name.dir | hdfs:hadoop | drwx------ |
| local | dfs.datanode.data.dir | hdfs:hadoop | drwx------ |
| local | $HADOOP_LOG_DIR | hdfs:hadoop | drwxrwxr-x |
| local | $YARN_LOG_DIR | yarn:hadoop | drwxrwxr-x |
| local | yarn.nodemanager.local-dirs | yarn:hadoop | drwxr-xr-x |
| local | yarn.nodemanager.log-dirs | yarn:hadoop | drwxr-xr-x |
| local | container-executor | root:hadoop | --Sr-s--* |
| local | conf/container-executor.cfg | root:hadoop | r-------* |
| hdfs | / | hdfs:hadoop | drwxr-xr-x |
| hdfs | /tmp | hdfs:hadoop | drwxrwxrwxt |
| hdfs | /user | hdfs:hadoop | drwxr-xr-x |
| hdfs | yarn.nodemanager.remote-app-log-dir | yarn:hadoop | drwxrwxrwxt |
| hdfs | mapreduce.jobhistory.intermediate-done-dir | mapred:hadoop | drwxrwxrwxt |
| hdfs | mapreduce.jobhistory.done-dir | mapred:hadoop | drwxr-x--- |
For More please Visit that page :
http://hadoop.apache.org/docs/r2.7.0/hadoop-project-dist/hadoop-common/SecureMode.html#Proxy_user