“Timed out attempting to find data in the correct node” spikes frequently after upgrade #1707

Expected behaviour

5.1.1 is as stable as 3.1.4

Actual behaviour

Program frequently raises timed out exceptions with err message :
"Timed out attempting to find data in the correct node"

I'm seeing this behaviour on

• OS: CentOs 7
• Redis: 4.0.2
• PHP: 7.1.6
• phpredis: 5.1.1， 5.0.2

Steps to reproduce, backtrace or example script

Upgrade phpredis from 3.1.4 to 5.1.1, then "Timed out attempting to find data in the correct node" is frequently raised. And same problem with 5.0.2.

Downgrade back to 3.1.4 , then everything goes well

I've checked

• There is no similar issue from other users
• Issue isn't fixed in develop branch