dump balancermetrics

The maprcli dump balancermetrics command returns a cumulative count of container moves and MB of data moved between storage pools. You can run this command periodically to determine how much data has been moved by the disk space balancer between two intervals. Use the -json option when running dump balancermetrics from the command line for best results.

The disk space balancer is a tool that balances disk space usage on a cluster by moving containers between storage pools. Whenever a storage pool is over 70% full (or it reaches a threshold defined by the cldb.balancer.disk.threshold.percentage parameter), the disk space balancer distributes containers to other storage pools that have lower utilization than the average for that cluster. The disk space balancer aims to ensure that the percentage of space used on all the disks in the node is similar. For more information, see Disk Space Balancer.

Parameters

Output

The maprcli dump balancermetrics command returns a cumulative count of container moves and MB of data moved between storage pools since the current CLDB became the master CLDB.

# maprcli dump balancermetrics -json
{
    "timestamp":1337770325979,
    "status":"OK",
    "total":1,
    "data":[
        {
            "numContainersMoved":10090,
            "numMBMoved":3147147,
            "timeOfLastMove": "Wed May 23 03:51:44 PDT 2012"
        }
    ]
}

Output fields

Example

CLI

maprcli dump balancermetrics -cluster 10.10.82.23 -json

REST

NOTE

When using a self-signed certificate, pass the -k option to curl to avoid the certificate check.

curl -k -u <username> -X GET https://abc.sj.us:8443/rest/dump/balancermetrics?cluster=10.10.82.23"