Investigate EventEmitter memory leak warning

[yamalight]

Trace from production:

(node) warning: possible EventEmitter memory leak detected. 11 unhandledRejection listeners added. Use emitter.setMaxListeners() to increase limit.
  at Pipe.channel.onread (internal/child_process.js:444:11)
  at process.addListener (events.js:252:17)
  at process.emit (events.js:185:7)
  at Pipe.channel.onread (internal/child_process.js:444:11)
  at handleMessage (internal/child_process.js:718:10)
  at emitTwo (events.js:100:13)
  at Pipe.channel.onread (internal/child_process.js:444:11)
  at process.addListener (events.js:252:17)

[yamalight]

Still happens (BBC world map use case) according to kibana logs:

(node) warning: possible EventEmitter memory leak detected. 11 unhandledRejection listeners added. Use emitter.setMaxListeners() to increase limit.
  at process.<anonymous> (runner.js:90:9)
  at handleMessage (internal/child_process.js:718:10)
  at Pipe.channel.onread (internal/child_process.js:444:11)

[pke0108]

@yamalight Any news on this issue ?

[yamalight]

@PavanDevOps does this still happens with latest node? I believe it was a bug in one of the older node versions

[pke0108]

@yamalight I dont see the error after restart.