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IQL

参考 spark sql在喜马拉雅的使用之xql的load、select、save语法实现了一套基于spark的即席查询服务

  • 优雅的交互方式,支持多种datasource/sink,多数据源混算
  • spark常驻服务,基于zookeeper的引擎自动发现
  • 负载均衡,多个引擎随机执行
  • 多session模式实现并行查询
  • 采用spark的FAIR调度,避免资源被大任务独占
  • 基于spark的动态资源分配,在无任务的情况下不会占用executor资源
  • 支持Cluster和Client模式启动
  • 基于Structured Streaming实现SQL动态添加流
  • 基于REPL的写代码功能,动态注册UDF函数
  • 高效的script管理,配合import/include语法完成各script的关联
  • 对数据源操作的权限验证

支持的数据源:hdfs、hive、hbase、kafka、mysql、es

支持的文件格式:parquet、csv、orc、json、text

在Structured Streaming支持的Sink之外还增加了对Hbase、MySQL、es的支持


HBase

加载数据

使用方式:

load hbase.t_mbl_user_version_info 
where `spark.table.schema`="userid:String,osversion:String,toolversion:String"
	   and `hbase.table.schema`=":rowkey,info:osversion,info:toolversion" 
	   and `hbase.zookeeper.quorum`="localhost:2181"
as tb;
参数 说明 默认值
hbase.zookeeper.quorum zookeeper地址 localhost:2181
spark.table.schema Spark临时表对应的schema(eg: "ID:String,appname:String,age:Int")
hbase.table.schema HBase表对应schema(eg: ":rowkey,info:appname,info:age")
spark.rowkey.view.name rowkey对应的dataframe创建的temp view名 ,设置了该值后只获取rowkey对应的数据

保存数据

使用方式:

save tb1 as hbase.tableName 
where `hbase.zookeeper.quorum`="localhost:2181"
      and `hbase.table.rowkey.filed`="name"
参数 说明 默认值
hbase.zookeeper.quorum zookeeper地址 localhost:2181
hbase.table.rowkey.field spark临时表中作为hbase的rowkey的字段名 第一个字段
bulkload.enable 是否启动bulkload false
hbase.table.name Hbase表名
hbase.table.family 列族名 info
hbase.table.region.splits 预分区分区段,以数组字符串方式指定,如 ['1','2','3']
hbase.table.rowkey.prefix 当rowkey是数字,预分区需要指明前缀的formate形式,如 00,在startKey和endKey都未设置的情况下会生成00-99等100个分区
hbase.table.startKey 预分区开始key,当hbase表不存在时,会自动创建Hbase表,不带一下三个参数则只有一个分区
hbase.table.endKey 预分区结束key
hbase.table.numReg 分区个数
hbase.check_table 写入hbase表时,是否需要检查表是否存在 false
hbase.cf.ttl ttl

MySQL

  • 加载数据
load jdbc.ai_log_count 
where driver="com.mysql.jdbc.Driver" // 默认
      and url="jdbc:mysql://localhost/db?characterEncoding=utf8" 
      and user="root" // 默认
      and password="***" //默认
as tb; 
  • 保存数据
save append tb as jdbc.aatest_delete;

文件操作 (其中formate可为:json、orc、csv、parquet、text)

  • 加载数据
load format.`path` as tb;
  • 保存数据
save tb as formate.`path` partitionBy uid coalesce 2;

Kafka


load kafka.`topicName`
where maxRatePerPartition="200"
   and `group.id`="consumerGroupId"

动态注册UDF函数

register udf.`myupper`
where func="
	def apply(name:String)={
		name.toUpperCase
	}
";

load jsonStr.'
{"name":"ufo"}
{"name":"uu"}
{"name":"HIN"}
' as tb1;

select myupper(name) as newName from tb1;

include(import等效)语法,通过路径引入脚本片段

import语法

参考

StreamingPro之MLSQL

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