org.apache.spark.sql.aliyun
* refer to org.apache.spark.sql.redis and used by org.apache.spark.sql.aliyun.redis.RedisRelation
* refer to org.apache.spark.sql.redis.RedisSourceRelation and change org.apache.spark.sql.redis.RedisSourceRelation.dataKeyId() for idempotent write
Default read operation number of partitions.
* refer to org.apache.spark.sql.redis and used by org.apache.spark.sql.aliyun.redis.RedisRelation