| name | data type | description |
|---|---|---|
| nameServiceName | string | The name of the NameService to which the new NameNode(s) should be added. |
| newNNHostIds | array of string | List of host ids to which new NameNode(s) should be added. |
| newNNDataDirs | map of string | Mapping of NameNode Data Directories list to host id(s), key is the host id, the value is a comma separated list of directories to be set as NameNode Data Directories for the new NameNode(s). |
| clearDataDirs | boolean | Specifies whether the NameNode Data Directories configured should be cleared as a first step, or the command should fail if the directories specified are not empty. |
| restartCluster | boolean | Specifies whether the HDFS dependent services of the cluster should be restarted after the changes are applied, to reconfigure dependent services |
Example
{
"nameServiceName" : "...",
"newNNHostIds" : [ "...", "..." ],
"newNNDataDirs" : {
"property1" : "...",
"property2" : "..."
},
"clearDataDirs" : true,
"restartCluster" : true
}