Metanode Related

GET

curl -v "http://127.0.0.1/metaNode/get?addr=127.0.0.1:9021"  | python -m json.tool

show the base information of the metaNode,such as addr,total memory,used memory and so on.

Parameters

Parameter	Type	Description
addr	string	the addr which communicate with master

response

{
    "ID": 3,
    "Addr": "127.0.0.1:9021",
    "IsActive": true,
    "Sender": {
        "TaskMap": {}
    },
    "Rack": "",
    "MaxMemAvailWeight": 66556215048,
    "TotalWeight": 67132641280,
    "UsedWeight": 576426232,
    "Ratio": 0.008586377967698518,
    "SelectCount": 0,
    "Carry": 0.6645600532184904,
    "Threshold": 0.75,
    "ReportTime": "2018-12-05T17:26:28.29309577+08:00",
    "MetaPartitionCount": 1
}

Decommission

curl -v "http://127.0.0.1/metaNode/decommission?addr=127.0.0.1:9021"

remove the metaNode from cluster, meta partitions which locate the metaNode will be migrate other available metaNode asynchronous

Parameters

Parameter	Type	Description
addr	string	the addr which communicate with master

Threshold

curl -v "http://127.0.0.1/threshold/set?threshold=0.75"

the used memory percent arrives the threshold,the status of the meta partitions which locate the metaNode will be read only

Parameters

Parameter	Type	Description
threshold	float64	the max percent of memory which metaNode can use