HDFS-6962 hdfs acl mask继承无效

ACL inheritance conflicts with umaskmode https://issues […]




hive merge小文件

2.输出合并 set hive.merge.mapfiles = true #在Map-only的任务结束时合 […]




parquet-hive列裁剪和谓词下推

一直好奇parquet和hive是怎样做列裁剪(跳过某些列)的,今天跟踪了一下代码。 parquet和hive […]




parquet编码定义

主要是翻译https://github.com/Parquet/parquet-format/blob/mas […]




HIVE-10815 随机选择HiveMetaStoreClient

https://issues.apache.org/jira/browse/HIVE-10815   […]




impala断开连接后释放session

代码在这里 https://github.com/cloudera/Impala/blob/cdh5-2.2. […]