[HDFS-1477] Support reconfiguring dfs.heartbeat.interval and dfs.namenode.heartbeat.recheck-interval without NN restart - ASF JIRA

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Details

Type: Sub-task
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 2.7.0
Fix Version/s: 2.9.0, 3.0.0-alpha1
Component/s: namenode
Labels:
None

Hadoop Flags:

Reviewed
Release Note:

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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

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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

Description

Modify NameNode to implement the interface Reconfigurable proposed in ~~HADOOP-7001~~. This would allow us to change certain configuration properties without restarting the name node.