MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 abort listeners added to

[ftayyab]

🐛 Bug Report

Trying to index documents repeatedly inside a loop causing the warning.

To Reproduce

Steps to reproduce the behavior:

Paste your code here:

getFiles(basedir).then((files) => {
    const pattern = /(\d\/\d{1,}\/\d{1,})/;
    files.forEach(filepath => {
        fs.readFile(filepath, (err, data )=> {
            let zxy = filepath.match(pattern)[0];
            let base64data = Buffer.from(data).toString('base64');
            /* Possible Memory Leak with elasticsearch library */
            client.index({
                index: 'orders',
                document:{
                    zxy,
                    tile: base64data
                }
            })
        });
    });
});

Expected behavior

Although the documents are indexed, this warning still appears. The warning should not be there.

Paste the results here:

Your Environment

• node version: 16.13.1
• @elastic/elasticsearch latest
• os: Windows
• any other relevant information

[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.