Timed Firebase Flashlight Request [30000ms]

Question

I am working on indexing firebase data for elastic search with a firebase flashlight . After running app.js (indexer) in the library, it stops after throwing 30000ms:
failed to index indexname/resource/ffd5517e-cab0-4bec-8989-4f6d760f18eb: Error: Request Timeout after 30000ms
because of which most bomb data are not indexed.

I set requestTimeout parameter in app.js when initializing elastic search

var esc = new ElasticSearch.Client({
  hosts: [
     {
        host: conf.ES_HOST,  // http://localhost
        port: conf.ES_PORT,  // 9200
        auth: (conf.ES_USER && conf.ES_PASS) ? conf.ES_USER + ':' + conf.ES_PASS : null
     }
  ],
  requestTimeout: 1200000  //this is in ms (20 mins)
});

in this case, the query is always executed, and the indexer timers after 30 seconds when the queries are executed.

This happens when indexing the dev database, which I can control by giving the heafty timeout duration, but for production data I cannot decide the timeout.

Can someone tell me how to handle requestTimeout so that it does not die out when indexing firebase data.

, Elasticsearch : ,
Elasticsearch Firebase ()
.