table region list

Lists the regions that make up a specified table.

Syntax

CLI

maprcli table region list
    -path <path>
    [ -start offset ]
    [ -limit number ]

REST

http[s]://<host>:<port>/rest/table/region/list?path=<path>&<parameters>

NOTE: The mapr user is not treated as a superuser. MapR-DB does not allow the mapr user to run this command unless that user is given the relevant permission or permissions with access-control expressions.

Parameters

Parameter	Description
path	Path to the table. For a path on the local cluster, start the path at the volume mount point. For example, if you want to list regions for a table named `test` under volume1 which has a mount point at /volume1, specify the following path: `/volume1/test` For a path on a remote cluster, you must also specify the cluster name in the path. For example, if you want to list regions for a table named `test` under volume1 in the sanfrancisco cluster, specify the following path:`/mapr/sanfrancisco/volume1/customer`
start	The offset from the starting region. The default value is 0.
limit	The number of regions to return, counting from the starting region. The default value is 2147483647.

Parameter

Description

path

Path to the table.

For a path on the local cluster, start the path at the volume mount point. For example, if you want to list regions for a table named test under volume1 which has a mount point at /volume1, specify the following path: /volume1/test

For a path on a remote cluster, you must also specify the cluster name in the path. For example, if you want to list regions for a table named test under volume1 in the sanfrancisco cluster, specify the following path:/mapr/sanfrancisco/volume1/customer

start

The offset from the starting region. The default value is 0.

limit

The number of regions to return, counting from the starting region. The default value is 2147483647.

Output fields

Verbose Field Name	Terse Field Name	Field Value
numberofrows	nr	Number of rows in the region
fid	fid	The region's FID.
primarynode	pn	Host name of the primary node for this region
secondarynodes	sn	Host names of the secondary nodes where this region is replicated
numberofrowswithdelete	nrd	Number of rows in the region, counting deleted rows
startkey	sk	Value of the start key for this region For the first region in a table, this value is exclusive. For all other regions, it is inclusive. See the example output.
endkey	ek	Value of the end key for this region This value is always exclusive. See the example output.
lastheartbeat	lhb	Time since last heartbeat from the region's primary node
logicalsize	ls	Logical size of the region
physicalsize	ps	Physical size of the region

Examples

Lists the region information for a table

This example lists the region information for the table newtable.

CLI

maprcli table region list -path /my.cluster.com/volume1/newtable

REST

https://r1n1.sj.us:8443/rest/table/region/list?path=%2Fmy.cluster.com%2Fvolume1%2Fnewtable

Example Output with the -json Option Used

This example shows two table regions. The value of endkey for the first region is the value of startkey for the second region. The value of endkey is always exclusive. So, for the first region, endkey shows that the first region was split with the addition of the record with the key 5190414F2E44DB732547630A9A81452539749000; for the second region, startkey shows that the region begins with that record.

{
    "timestamp":1452554659812,
    "timeofday":"2016-01-11 03:24:19.812 GMT-0800",
    "status":"OK",
    "total":2,
    "data":[
        {
            "primarynode":"10.10.123.45",
            "secondarynodes":"",
            "startkey":"-INFINITY",
            "endkey":"5190414F2E44DB732547630A9A81452539749000",
            "lastheartbeat":0,
            "fid":"2068.100.131676",
            "logicalsize":794624,
            "physicalsize":794624,
            "copypendingsize":0,
            "numberofrows":0,
            "numberofrowswithdelete":0,
            "numberofspills":0,
            "numberofsegments":0
        },
        {
            "primarynode":"10.10.123.54",
            "secondarynodes":"",
            "startkey":"5190414F2E44DB732547630A9A81452539749000",
            "endkey":"INFINITY",
            "lastheartbeat":0,
            "fid":"2069.181.131578",
            "logicalsize":745472,
            "physicalsize":745472,
            "copypendingsize":0,
            "numberofrows":0,
            "numberofrowswithdelete":0,
            "numberofspills":0,
            "numberofsegments":0
        }
    ]
}