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": {}
    },
    "Cell": "",
    "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