phoenix

先看一段官網的介紹

Apache Phoenix enables OLTP and operational analytics in Hadoop for low latency applications by combining the best of both worlds:

• the power of standard SQL and JDBC APIs with full ACID transaction capabilities and
• the flexibility of late-bound, schema-on-read capabilities from the NoSQL world by leveraging HBase as its backing store
  Apache Phoenix is fully integrated with other Hadoop products such as Spark, Hive, Pig, Flume, and Map Reduce.

phoenix的主要應用的場景在OLTP。
OLTP和OLAP的區別在於

• OLTP能夠簡單理解爲多人同時進行聯機事物處理
• OLAP能夠簡單理解爲1我的在對聯機事物進行決策分析（切片，下鑽等等） OLTP天生就適合在報表系統中使用