Currently, the continuous slot ranges won't be merged
while the new slot is added which is expected in Redis behavior.
For example, we now have below slot ranges in one shard: [1,100], [102, 200], [202, 300]
and the slot 101 was added to this shard, we would like to become: [1, 200], [202, 300]
instead of [1, 101], [102, 200], [202, 300].
Currently, the continuous slot ranges won't be merged while the new slot is added which is expected in Redis behavior.
For example, we now have below slot ranges in one shard: [1,100], [102, 200], [202, 300] and the slot
101was added to this shard, we would like to become: [1, 200], [202, 300] instead of [1, 101], [102, 200], [202, 300].