Presto 0.166 发布了,Presto 是 Facebook 开源的数据查询引擎,可对250PB以上的数据进行快速地交互式分析,查询的速度达到商业数据仓库的级别。据称该引擎的性能是 Hive 的 10 倍以上。
Presto 可以查询包括 Hive、Cassandra 甚至是一些商业的数据存储产品。单个 Presto 查询可合并来自多个数据源的数据进行统一分析。
更新内容:
General Changes
Fix failure due to implicit coercion issue in IN expressions for certain combinations of data types (e.g., double and decimal).
Add query.max-length config flag to set the maximum length of a SQL query. The default maximum length is 1MB.
Improve performance of approx_percentile().
Hive Changes
Include original exception from metastore for AlreadyExistsException when adding partitions.
Add support for the Hive JSON file format (org.apache.hive.hcatalog.data.JsonSerDe).
Cassandra Changes
Add configuration properties for speculative execution.
SPI Changes
Add peak memory reservation to SplitStatistics in split completion events.
下载地址:https://github.com/prestodb/presto/archive/0.166.zip
来自:开源中国社区

