Apacche Drill 是一个分布式的MPP计算框架，支持使用SQL查询多种存储框架（MongoDB、MySQL、Hadoop等）。本项目主要升级了Apache Drill对kudu的查询支持。
Apache Drill is a distributed MPP query layer that supports SQL and alternative query languages against NoSQL and Hadoop data storage systems. This project mainly enhance query support of kudu.
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fix the bugs of kudu client which version is 1.3.0.更新了对kudu新版本（1.3.0版）的支持，修复了多个bug.
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push down the query filter of sql into kudu predicate,so kudu query performance will improve greatly. 将查询过滤条件下推到kudu predicate,会大大提高kudu 的查询性能
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support parition to filter kudu data. 支持分区过滤
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fix the bugs when using hbase join with other storage systems.