建立hive表的数据仓库

数据库  /  管理员 发布于 4年前   382

1.建立hive表:

create external table card_apply(
action_id string,
action_name string,
phone_number string,
city string,
has_creditcard int,
credit_cards string,
has_login int,
server_time string
)PARTITIONED BY(pt STRING)
ROW FORMAT DELIMITED FIELDS TERMINATED BY '|'
STORED AS TEXTFILE;

2.每天从hdfs加载数据:

ALTER TABLE cardApply ADD PARTITION (pt='17-11-20')
LOCATION '/log_data/m_station/pure_log/card_apply_data/17-11-20';

3.验证加载数据是否成功:

select * from card_apply where pt='17-11-20' limit 100;

4.shell脚本load_tracklogs.sh编写:

#!/bin/sh

## 环境变量生效
. /etc/profile

## HIVE HOME
HIVE_HOME=/opt/cloudera/parcels/CDH-5.12.1-1.cdh5.12.1.p0.3/lib/hive/

## 日志目录
LOG_DIR=/log_data/m_station/pure_log/card_apply_data

## 文件名称, 依据日期date获取
yesterday=`date -d -1days '+%y%m%d'`
LOAD_FILE=${LOG_DIR}/${yesterday}
echo $LOAD_FILE
${HIVE_HOME}/bin/hive -e "use cardbaobao; LOAD DATA INPATH '${LOAD_FILE}' INTO TABLE card_apply PARTITION(pt = '${yesterday}');"

遇到的问题:

Loading data to table cardbaobao.card_apply partition (pt=17-11-20)
Failed with exception Unable to move source hdfs://nameservice1/log_data/m_station/pure_log/card_apply_data/17-11-20 to destination hdfs://nameservice1/user/hive/warehouse/cardbaobao.db/card_apply/pt=17-11-20/17-11-20
FAILED: 
Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MoveTask

解决方法:

CDH->HDFS->配置->检查HDFS权限->取消勾选然后保存重启HDFS  

CDH界面会出现隐患告警,警告可忽略