LOADING Redis is loading the dataset in memory #50
Description
When there is a reshard and scaleReads param is set to all or slave , the replica can return an error "LOADING Redis is loading the dataset in memory".
Expected behavior
If scaleReads is set to slave it should wait for the replica to be ready, or untill command times out.
if scaleReads is set to all it should fallback to master (this is a bit dangerous since master can become overloaded)
Actual behavior
It throws the error returned from the DB
Some related context redis/ioredis#358