We have installed a datanode with regionserver on one server. The datanode does not start with the following error: java.io.IOException: the path component: '/var' is world-writable.Its permissions are 0777.Please fix this or select a different socket path and each time before running datanode on each datanode you have to execute the command: chmod 750 /var The analysis of logs showed that the permissions on folder /var are changed when start regionserver a fragment of the regionserver log: 2017-10-24 15:04:22,833 - Directory['/tmp'] {'create_parents': True, 'mode': 0777} 2017-10-24 15:04:22,834 - Directory['/var'] {'create_parents': True, 'cd_access': 'a'} 2017-10-24 15:04:22,834 - Execute[('chmod', '1777', u'/var')] {'sudo': True} 2017-10-24 15:04:22,839 - XmlConfig['hbase-site.xml'] {'owner': 'hbase', 'group':'hadoop', 'conf_dir': '/usr/hdp/current/hbase-regionserver/conf','configuration_attributes': {}, 'configurations': ...} How can I fix this? ... View more