API Stability Short-Term

The setAllowRebalanceExistingSegments() GraphQL mutation is used to allow existing segments to be moved between nodes to achieve a better data distribution.

Related to this mutation field is the setSegmentReplicationFactor() mutation to set the segment replication factor. There is also the query, segment() to get information about a specific segment.

Syntax

graphql
setAllowRebalanceExistingSegments(
      allowRebalanceExistingSegments: boolean!
   ): boolean

The mutation field has no special datatypes. It uses boolean for both the input and the return datatype. For the given data, enter true if the cluster should allow moving existing segments between nodes to achieve a better data distribution.

Example

Below is an example of how this mutation field might be used:

Raw
graphql
mutation {
  setAllowRebalanceExistingSegments(
     allowRebalanceExistingSegments: true )
}
Mac OS or Linux (curl)
shell
curl -v -X POST $YOUR_LOGSCALE_URL/graphql \
    -H "Authorization: Bearer $TOKEN" \
    -H "Content-Type: application/json" \
    -d @- << EOF
{"query" : "mutation {
  setAllowRebalanceExistingSegments(
     allowRebalanceExistingSegments: true )
}"
}
EOF
Mac OS or Linux (curl) One-line
shell
curl -v -X POST $YOUR_LOGSCALE_URL/graphql \
    -H "Authorization: Bearer $TOKEN" \
    -H "Content-Type: application/json" \
    -d @- << EOF
{"query" : "mutation {
  setAllowRebalanceExistingSegments(
     allowRebalanceExistingSegments: true )
}"
}
EOF
Windows Cmd and curl
shell
curl -v -X POST $YOUR_LOGSCALE_URL/graphql ^
    -H "Authorization: Bearer $TOKEN" ^
    -H "Content-Type: application/json" ^
    -d @'{"query" : "mutation { ^
  setAllowRebalanceExistingSegments( ^
     allowRebalanceExistingSegments: true ) ^
}" ^
} '
Windows Powershell and curl
powershell
curl.exe -X POST 
    -H "Authorization: Bearer $TOKEN"
    -H "Content-Type: application/json"
    -d '{"query" : "mutation {
  setAllowRebalanceExistingSegments(
     allowRebalanceExistingSegments: true )
}"
}'
    "$YOUR_LOGSCALE_URL/graphql"
Perl
perl
#!/usr/bin/perl

use HTTP::Request;
use LWP;

my $TOKEN = "TOKEN";

my $uri = '$YOUR_LOGSCALE_URL/graphql';

my $query = "mutation {
  setAllowRebalanceExistingSegments(
     allowRebalanceExistingSegments: true )
}";
$query =~ s/\n/ /g;
my $json = sprintf('{"query" : "%s"}',$query);
my $req = HTTP::Request->new("POST", $uri );

$req->header("Authorization" => "Bearer $TOKEN");
$req->header("Content-Type" => "application/json");

$req->content( $json );

my $lwp = LWP::UserAgent->new;

my $result = $lwp->request( $req );

print $result->{"_content"},"\n";
Python
python
#! /usr/local/bin/python3

import requests

url = '$YOUR_LOGSCALE_URL/graphql'
mydata = r'''{"query" : "mutation {
  setAllowRebalanceExistingSegments(
     allowRebalanceExistingSegments: true )
}"
}'''

resp = requests.post(url,
                     data = mydata,
                     headers = {
   "Authorization" : "Bearer $TOKEN",
   "Content-Type" : "application/json"
}
)

print(resp.text)
Node.js
javascript
const https = require('https');

const data = JSON.stringify(
    {"query" : "mutation {
  setAllowRebalanceExistingSegments(
     allowRebalanceExistingSegments: true )
}"
}
);


const options = {
  hostname: '$YOUR_LOGSCALE_URL',
  path: 'graphql',
  port: 443,
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Content-Length': data.length,
    Authorization: 'BEARER ' + process.env.TOKEN,
    'User-Agent': 'Node',
  },
};

const req = https.request(options, (res) => {
  let data = '';
  console.log(`statusCode: ${res.statusCode}`);

  res.on('data', (d) => {
    data += d;
  });
  res.on('end', () => {
    console.log(JSON.parse(data).data);
  });
});

req.on('error', (error) => {
  console.error(error);
});

req.write(data);
req.end();
Example Responses
Success (HTTP Response Code 200 OK)
json
{
  "data": {
    "setAllowRebalanceExistingSegments": true
  }
}