[HDFS-9349] Support reconfiguring fs.protected.directories without NN restart

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: namenode
• Hadoop Flags: Reviewed

Release Note

Steps to reconfigure:
1. change value of the parameter in corresponding xml configuration file
2. to reconfigure, run
    hdfs dfsadmin -reconfig namenode <nn_addr>:<ipc_port> start
3. to check status of the most recent reconfigure operation, run
    hdfs dfsadmin -reconfig namenode <nn_addr>:<ipc_port> status
4. to query a list reconfigurable properties on NN, run
    hdfs dfsadmin -reconfig namenode <nn_addr>:<ipc_port> properties

• Assignee: Xiaobing Zhou
• Reporter: Xiaobing Zhou
• Created: 30/Oct/15 20:57
• Updated: 30/Aug/16 01:24
• Resolved: 29/Mar/16 20:59

Description

This is to reconfigure

fs.protected.directories

without restarting NN.