大数据之CDH数仓(11) | 数仓之即席查询数仓搭建

本是古典何须时尚 2022-12-11 15:18 277阅读 0赞

### 目录 ###

*  Impala安装
 *   *  添加服务
     *  选择Impala服务
     *  角色分配
     *  配置Impala
     *  启动Impala
     *  安装成功
     *  配置Hue支持Impala
 *  Impala基于Hue查询
 *   *  打开Hue
     *  进入impala查询
     *  缺少impala解决方案

# Impala安装 #

## 添加服务 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center]

## 选择Impala服务 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 1]

## 角色分配 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 2]  
**`注意：最好将StateStore和CataLog Sever单独部署在同一节点上。`**

## 配置Impala ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 3]

## 启动Impala ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 4]

## 安装成功 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 5]

## 配置Hue支持Impala ##

1）进入HUE配置页面，搜索“impala”，开启HUE中的impala服务  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 6]

2）搜索“hue\_safety\_valve.ini 的 Hue 服务高级配置代码段（安全阀）”，输入以下代码段，确定HUE支持impala搜索引擎  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 7]

[impala]
    server_host=hadoop102
    server_port=21050

# Impala基于Hue查询 #

## 打开Hue ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 8]  
发现缺少impala，请看文章最后  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 9]

## 进入impala查询 ##

分别用impala和hive查询以下SQL语句，对比查询速度

select  
        sku.id,
        sku.spu_id, 
        sku.price,
        sku.sku_name,  
        sku.sku_desc,  
        sku.weight,  
        sku.tm_id,  
        sku.category3_id,  
        c2.id category2_id ,  
        c1.id category1_id,  
        c3.name category3_name,  
        c2.name category2_name,  
        c1.name category1_name,  
        sku.create_time,
        sku.dt
    from
        ods_sku_info sku 
    join ods_base_category3 c3 on sku.category3_id=c3.id 
        join ods_base_category2 c2 on c3.category2_id=c2.id 
        join ods_base_category1 c1 on c2.category1_id=c1.id 
    where sku.dt='2019-02-10'  and c2.dt='2019-02-10';

## 缺少impala解决方案 ##

1.重启impala  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 10]  
2.发现看不到，注销hive用户，使用admin登录  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 11]

![在这里插入图片描述][2020100411075652.png_pic_center]  
3.把hive改成impala，看看报什么错  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 12]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 13]  
4.再次重新写入(先把内容删除，点击保存更改，在复制内容，点保存更改)，重启hue

5.出现了impala  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 14]  
6.切换hive用户还是看不到，解决方案  
使用admin用户  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 15]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 16]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2NTQ4ODU1_size_16_color_FFFFFF_t_70_pic_center 17]

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