Redis issue on module-redis-fork

Issue

Hi everyone,

I have an issue while trying to interact with Redis in those conditions:

1. Redis instance with Redisearch module,
2. Create node-redis client before Redis module fork is ongoing,
3. 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 (node-redis) ->
Redis connection is gone from end event
client err ->
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.

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

Reproduce the behavior with node-redis 3.2, Redis 6.0.4, and RediSearch 1.6.15 by creating the client before the module fork. Start by tracing command sending and connection error handling during the fork. Done means commands are not left idle or aborted when the fork ends, and the existing client continues working.