Redis has a limitation of 1024 * 1024 parameters]() for bulk operations.
To receive more than 1024 * 1024 - 1 entries with entrySet(), we can directly use the HGETALL command instead of first fetching the keys with HKEYS and then fetching the values with HMGET.
See also: https://github.com/antirez/redis/blob/4.0.9/src/networking.c#L1200
Original pull request: #326.
8ed4703d46