hadoop中文文档的相关内容

文章 2017-10-10 来自：开发者社区

Hadoop-2.2.0中文文档—— Common - CLI MiniCluster

目的使用 CLI MiniCluster, 用户能够简单地仅仅用一个命令就启动或关闭一个单一节点的Hadoop集群，不须要设置不论什么环境变量或管理配置文件。 CLI MiniCluster 同一时候启动一个 YARN/MapReduce 和 HDFS 集群。这对那些想要高速体验一个真实的Hadoop集群或是測试依赖明显的Hadoop函数的非Java程序...

文章 2016-04-07 来自：开发者社区

[Hadoop]Hive r0.9.0中文文档（一）之数据操作语句

一、创建表的语法 CREATE [EXTERNAL] TABLE [IF NOT EXISTS] table_name [(col_name data_type [COMMENT col_comment], ...)] [COMMENT table_comment] [PARTITIONED BY (col_name data_type [COMMENT col_comment], ...

文章 2016-04-07 来自：开发者社区

[Hadoop]Hive r0.9.0中文文档（二）之联表查询Join

一、Join语法 join_table: table_reference [INNER] JOIN table_factor [join_condition] | table_reference {LEFT|RIGHT|FULL} [OUTER] JOIN table_reference join_condition | table_reference LEFT SEMI JOI...

文章 2016-04-07 来自：开发者社区

[Hadoop]Hive r0.9.0中文文档（三）之Hive相关命令

一、Hive命令选项 Usage: Usage: hive [-hiveconf x=y]* [<-i filename>]* [<-f filename>|<-e query-string>] [-S] -i <filename> Initialization Sql from file (executed auto...

文章 2016-04-07 来自：开发者社区

[Hadoop]Hive r0.9.0中文文档（四）之Hive变量的使用

一、介绍 例子: $ a=b $ hive -e " describe $a " 如果你hive数据库中没有b这个表，则会提示Table b does not exist hive的变量设置可以放在hiveconf中，使变量赋值与查询合并为一句话： 例子: $ bin/hive -hiveconf a=b -e 'set a; set hiveconf:a; \ cr...

文章 2016-04-07 来自：开发者社区

[Hadoop]Sqoop 1.4.2中文文档（一）之数据导入

一、Sqoop Help $ sqoop help usage: sqoop COMMAND [ARGS] Available commands: codegen Generate code to interact with database records create-hive-table Import a table definition into Hiv...

文章 2016-04-07 来自：开发者社区

[Hadoop]Sqoop 1.4.2中文文档（二）之数据导出

一、sqoop-export 相关参数： usage: sqoop export [GENERIC-ARGS] [TOOL-ARGS] Common arguments: --connect <jdbc-uri> Specify JDBC connect ...

文章 2016-04-07 来自：开发者社区

[Hadoop]Sqoop 1.4.2中文文档（三）之SqoopJob与其外的操作

一、sqoop job相关命令参数 usage: sqoop job [GENERIC-ARGS] [JOB-ARGS] [-- [<tool-name>] [TOOL-ARGS]] Job management arguments: --create <job-id> Create a new saved job --delete &...

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开源大数据平台 E-MapReduce（简称“EMR”）是云原生开源大数据平台，向客户提供简单易集成的Hadoop、Hive、Spark、Flink、Presto、ClickHouse、StarRocks、Delta、Hudi等开源大数据计算和存储引擎服务。

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