MaxListenersExceededWarning

[UchihaYuki]

🐛 Bug Report

When I do lots of searches at the same time, I'll get the following error:

(node:2868) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 abort listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit

To Reproduce

Steps to reproduce the behavior:

Paste your code here:

const esClient = new Client({
  nodes: config.es.hosts,
  auth: {
    username: config.es.username,
    password: config.es.password,
  },
})
await Promise.all(Array(20).fill(0).map(_ => esClient.search({
  index: SENTENCES_INDEX
})))

Expected behavior

It seems the client will establish a new socket connection to elasticsearch server on every search, so the number of connections will keep going up and exceed events.EventEmitter.defaultMaxListeners. Is it possible to limit the whole connections esClient can have and reuse existing ones?

Your Environment

• node version: v16.13.1
• @elastic/elasticsearch version: >=8.1.0
• os: Windows

[ftejeria]

I removed the warning by adding in the TransportRequestOptions for the signal field a new AbortController().signal;, here an example client.search( { yourQuery }, { signal: new AbortController().signal, } Any problem attached to this workaround to remove the warning ?

[JoshMock]

Closing as a duplicate of elastic/elastic-transport-js#63.