问题
Recently, I was having a discussion with my friend over the features of SparkSQL when we came across this question. Are they ACID transactions? Does SparkSQL follow CAP theorem?
I am a little new to this field, help me out. Thanks in advance.
回答1:
SparkSQL is a query language and not a storage like Hive or MYSQL. Although it can register table which can be used by others, its only temporary. SparkSQL supports what the underlying databases support.
回答2:
SparkSQL follows the Relational database model. It does not support Hive transactions ("ACID").
Following are few useful posts:
http://www.cloudera.com/documentation/enterprise/release-notes/topics/cdh_rn_spark_ki.html http://db-engines.com/en/system/Oracle+NoSQL%3BSAP+IQ%3BSpark+SQL
来源：https://stackoverflow.com/questions/37142172/is-sparksql-rdbms-or-nosql