Archiving for File Count Reduction Note: Archiving should be considered an advanced command due to the caveats involved. Archiving for File Count Reduction Overview Settings Usage Archive Unarchive Cautions and Limitations Under the Hood Overview Due…

集群中遇到了文件个数超出限制的错误: 0)昨天晚上spark 任务突然抛出了异常:org.apache.hadoop.hdfs.protocol.NSQuotaExceededException: The NameSpace quota (directories and files) of directory /mydir is exceeded: quota=100000 file count=100001 1)错误提示内容信息:集群中遇到了文件个数超出限制的错误. 2)问题错误来自于hado…

Alter Table/Partition/Column Alter Table Rename Table Alter Table Properties Alter Table Comment Add SerDe Properties Alter Table Storage Properties Additional Alter Table Statements Alter Partition Add Partitions Dynamic Partitions Rename Partition…

LanguageManual DML Hive Data Manipulation Language Hive Data Manipulation Language Loading files into tables Syntax Synopsis Notes Inserting data into Hive Tables from queries Syntax Synopsis Notes Dynamic Partition Inserts Example Additional Documen…

Group By Syntax Simple Examples Select statement and group by clause Advanced Features Multi-Group-By Inserts Map-side Aggregation for Group By Grouping Sets, Cubes, Rollups, and the GROUPING__ID Function Group By Syntax groupByClause: GROUP BY group…

Hive Operators and User-Defined Functions (UDFs) Hive Operators and User-Defined Functions (UDFs) Built-in Operators Relational Operators Arithmetic Operators Logical Operators Complex Type Constructors Operators on Complex Types Built-in Functions M…

EXPLAIN Syntax EXPLAIN Syntax Hive provides an EXPLAIN command that shows the execution plan for a query. The syntax for this statement is as follows: EXPLAIN [EXTENDED|DEPENDENCY|AUTHORIZATION] query AUTHORIZATION is supported from HIVE 0.14.0 via H…

LanguageManual WindowingAndAnalytics     Skip to end of metadata   Added by Lefty Leverenz, last edited by Lefty Leverenz on Aug 01, 2014  (view change) show comment Go to start of metadata   Windowing and Analytics Functions Windowing and Analytics…

Virtual Columns Simple Examples Virtual Columns Hive 0.8.0 provides support for two virtual columns: One is INPUT__FILE__NAME, which is the input file's name for a mapper task. the other is BLOCK__OFFSET__INSIDE__FILE, which is the current global fil…

hive语法规则LanguageManual DDL SQL DML 和 DDL 数据操作语言 (DML) 和 数据定义语言 (DDL) 一.数据库 增删改都在文档里说得也很明白,不重复造车轮 二.表 1.创建table重点解析如下 Create Table eg1:基础创建方式 create table if not exists default.cenzhongman ( ip string COMMENT 'this is ip', name string ) COMMENT 'this…