Redis issue on module-redis-fork - redis

Question

Issue
Hi everyone,
I have an issue while trying to interact with Redis in those conditions:
Redis instance with Redisearch module,
Create node-redis client before Redis module fork is ongoing,
Redis module fork is on-going
The behaviour that I get is that "send_command" stays idle until the fork stops.
When the fork ends I get this error:
debug mode ->
Redis connection is gone from end event
client error ->
AbortError: Redis connection lost and command aborted. It might have been processed.
After I get this error the commands from the same client (without creating a new client) come back to works fine.
On every fork, I got the same behaviour.
Additional Info:
keys: 37773168,
used_memory_human: '87.31G'
Code Example:
This is a simple express app,
'use strict';
const express = require('express');
const Redis = require('redis');
// Redis.debug_mode = true;
const router = express.Router();
let client = null;
router.get('/redisearch/connect', async (req, res, next) => {
const conf = {
'host': '127.0.0.1',
'port': 6379,
'db': 0,
};
try {
if (!client) client = Redis.createClient(conf.port, conf.host, { db: conf.db });
res.send('Connected');
} catch (err) {
res.send(err);
}
});
router.get('/redisearch/d', async (req, res, next) => {
const num = 10;
const dArgs = ['testIndexName', `#ic:[${num} ${num}]`, 'GROUPBY', 1, '#d'];
try {
client.send_command('FT.AGGREGATE', dArgs, (err, reply) => {
if (err) {
res.send({ err: err });
};
res.send({ d: reply });
});
} catch (err) {
res.send(err);
}
});
module.exports = router;
this is the simplest way I have to replicate the problem.
I don't know if there is a way to force redis to use the fork, in my case it appears following a massive search on index followed by delete and insert of records.
Redis however during these operations (insert/delete) works normally,
I can launch commands from the redis-cli;
By creating a new instance of the node-redis client while the fork is present everything works normally and when the fork goes away everything keep working.
Environment
Node.js Version: v14.15.1
Redis Version: 6.0.4
redisearch Version: 1.6.15
node-redis Version: 3.2
Platform: Server 128GB RAM, 8 Core, Debian