Hive 源码- GenericUDAFRowNumber.java 2015-09-10

/**  * Licensed to the Apache Software Foundation (ASF) under one  * or more contributor license agreements.  See the NOTICE file ...

(1781)次阅读|(0)个评论

Hive中什么时候执行FetchTask任务 2015-07-05

select * from table hive> select * from t limit 1;     直接执行FetchTask Hive中有各种各样的Task任务，其中FetchTask算是最简单 ...

(4022)次阅读|(0)个评论

OpenStack部署工具总结 2015-04-13

目前感觉比较简单直观的部署工具有RDO、devstack、Fuel等： 1. RDO https://openstack.redhat.com/Quickstart REDHAT出品，支持Redhat、Ce ...

(1733)次阅读|(0)个评论

storm 一个报错 Async loop died! & reconnect 2015-01-09

Async loop died! 重启任务后发现任务一直异常，日志中有大量reconnect。 b.s.m.n.Client Reconnect started for Netty-Client-192.168.1.2/192.168.1.21:6 ...

(1540)次阅读|(0)个评论

编译Hadoop2.6.0源码 2015-01-07

1. jdk1.7 此处省略二百字 2. maven 3.2.1 安装 #wget http://apache.communilink.net/maven/maven-3/3.2.1/binaries/apache-maven-3.2.1-bin.tar.gz  ...

(1586)次阅读|(0)个评论

Hive之insert into 和insert overwrite 2015-01-04

insert into 和overwrite的用法： INSERT INTO TABLE tablename1 \ select_statement1 FROM from_statement; INSERT OVERWRITE TABLE tablename1 ...

(1951)次阅读|(0)个评论

查看更多