鱼归不知处

1、修改字段类型及长度。

增加beeline启动参数：--incremental=true

1、启动命令#！/bin/bashnohup hive --service metastore >> $HIVE_HOME/log/metasotre.log 2>&1 &nohup hive --service hiveserver2 >> $HIVE_HOME/log/hiveserver.log 2>&1 &2、停止命令#！/bin/bashprocess="hive"PID=$(ps x | grep

1、定义UDFimport java.util.Randomdef randomPrefixUDF(value: String): String = { new Random().nextInt(10).toString() + "_" + value.toInt}def removePrefixUDF(value: String): String = { value.split("_")(1)}2、注册UDFspark.udf.register("random_pre

1、去除表名hive.resultset.use.unique.column.names=false;

1、创建表CREATE TABLE t_user ( id INT, username STRING, password STRING) ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde'WITH SERDEPROPERTIES ("separatorChar"=",", "quotechar"="\"")...

1、下载spark并解压wget http://mirrors.tuna.tsinghua.edu.cn/apache/spark/spark-2.3.4/spark-2.3.4-bin-hadoop2.6.tgztar zxvf spark-2.3.4-bin-hadoop2.6.tgz2、配置1）将hive-site.xml拷贝到$SPARK_HOME/conf目录下。2...

1、Hive执行SQL语句，出现如下错误：Container is running beyond physical memory limits. Current usage: 4.3 GB of 4 GB physical memory used; 8.9 GB of 8.4 GB virtual memory used. Killing container. 2、错误分析：4....

1、下载Tezwget http://www-us.apache.org/dist/tez/0.9.2/apache-tez-0.9.2-bin.tar.gz2、配置Tez1）将$TEZ_HOME/share/tez.tar.gz 上传至HDFS：hdfs:///cdh5/apps/tez/tez.tar.gz。hdfs dfs -mkdir -p /cdh5/apps/tez...

首先，查看Hive的元数据库(MySQL)编码：mysql>show variables like '%char%';下面使用修改hive默认的SQL语句来解决乱码问题。1、查找文件[kanaka@spark~]$cd $HIVE_HOME/scripts/metastore/upgrade/mysql2、依据使用的Hive版本来修改相应的SQL文件我修改...

1、安装MySQL详见centos7安装配置mysql2、创建数据库mysql> CREATE DATABASE `hive` CHARACTER SET utf8 COLLATE utf8_general_ci;Query OK, 1 row affected (0.00 sec)mysql> GRANT ALL PRIVILEGES ON hive.* TO hi...

具体步骤：1、JAVA代码：package com.bigdata;import org.apache.hadoop.hive.ql.exec.UDF;public class Add extends UDF { public Integer evaluate(Integer a, Integer b) { if (null == a || null == b) {