elastic-deletebyquery

Install via NPM

npm install elastic-deletebyquery

Usage

You need to require the module. Then call the method and pass the client on the parameter.

Then it is just a SCROLL, so you can pass the options of the scroll the only option by default is the scroll = 30s.

If you leave empty the query, you are going to delete all the documents on the type

var elasticsearch = require('elasticsearch'),
    elasticDeleteQuery = require('elastic-deletebyquery');

var client = new elasticsearch.Client({
    host: 'localhost:9200'
});

elasticDeleteQuery(client);

var options = {
    index: 'index',
    type: 'type'
}

//This will delete all
client.deleteByQuery(options, function(err, response){
    console.log('The elements deleted are: %s', response.elements);
});

var options = {
    index: 'index',
    type: 'type',
    body: {
        query: {
            term: {
                _id: 1
            }
        }
    }
}

//This will delete only the document with the id = 1
client.deleteByQuery(options, function(err, response){
    console.log('The elements deleted are: %s', response.elements);
})

Batch Implementation

I implemented a "size" in the query that will automatically segment the query (default 100), so if you have 100.000 elements to delete, it is going to delete a batch of X elements (size defined) and then, do a scroll again. You can pass the size on the options. This was done, because if you send a bulk of 100.000 elements or more, depending on your System Specification may cause a Memory exception.

ES Documentation

If you want to see the parameters that scroll supports, just visit the elasticsearch documentation