Phoenix二级索引

其他 2021-03-31 21:22:17 阅读次数: 0

文章目录


概念
在Hbase索引(一级索引)的基础上再构建一级索引

功能

  • 在Hbase中使用Rowkey作为唯一索引，无法满足大部分的查询走索引，导致性能较差
  • 通过构建二级索引，用走两次索引代替全表扫描

实现
hoenix底层构建了大量的协处理器，来实现二级索引的构建

  1. 根据数据存储需求，创建原始数据表，将数据写入原始数据表

rowkey：id name age

  1. 根据数据查询需求，构建二级索引，Phoenix自动创建索引表

create index indexName on tbName(colName);
rowkey：name_id

  1. 查询数据时，Phoenix根据过滤条件是否存在二级索引，优先判断走二级索引代替全表扫描

  2. 原始数据表发生数据变化时，Phoenix会自动更新索引表的数据

分类

全局索引

  1. 概念
    为经常作为查询条件的列创建索引，Phoenix自动创建一张索引表，这张索引表的rowkey就是该列

  2. 实现
    将之前的订单数据(ORDER_DTL)使用Phoenix来进行操作：

  • 构建索引，使USER_ID走索引查询：
create index IND_USER_ID on ORDER_DTL(USER_ID);
  • 将USER_ID = '4944191’作为查询条件查看是否走的是索引查询：
explain select USER_ID from ORDER_DTL where USER_ID = '4944191';

在这里插入图片描述

  • 将USER_ID = '4944191’作为查询条件，使查询结果包含非索引列，强制走索引查询
select /*+ INDEX(ORDER_DTL IND_USER_ID) +*/ * from ORDER_DTL where USER_ID = '4944191';
  • 删除索引
drop index IND_USER_ID on ORDER_DTL;

注：
当select查询中引用了其他非索引列，该索引是不会生效的
例如：在查询条件引用了其他非索引列或在查询结果中引用了其他非索引列

覆盖索引

  1. 概念

在覆盖索引的基础上，将经常作为查询条件的列的值放入了索引表中，避免查索引表之后还去查数据表

  1. 实现
  • 使用覆盖索引实现根据用户ID查询已付款的订单ID和支付金额
创建覆盖索引：
create index IND_USER_ID ON ORDER_DTL(USER_ID) include (ID,C1.PAY_MONEY);

查询根据用户ID查询已付款的订单ID和支付金额：
select ID,PAY_MONEY from ORDER_DTL where USER_ID = '4944191';

本地索引

  1. 概念
    将索引数据与对应的原始数据放在同一台机器，避免了跨网络传输，提高了写的性能

  2. 特点

  1. 即使查询数据中包含了非索引字段，也会走本地索引
  2. 本地索引会修改原始数据，如果构建了本地索引，不能通过Hbase的API来读写数据的，必须通过Phoenix来实现读写
  3. 本地索引对盐表不生效的
  4. 构建索引数据，将索引数据直接存储在原表中
  1. 应用：写多读少
  2. 创建格式：
CREATE local INDEX 索引名称 ON 表名 (列名1, 列名2, 列名3...)
  1. 案例
    准备工作
  • 关闭Hbase及Phoenix
关闭Hbase：
/export/server/hbase-2.1.0/bin/stop-hbase.sh

关闭Phoenix：
退出shell窗口即可：!tables
  • 修改hbase-site.xml中Zookeeper的连接，所有Hbase节点及Phoenix的bin目录下
 <property>
    <name>hbase.zookeeper.quorum</name>
    <value>node1,node2,node3:2181</value>
  </property>
  • 重启Hbase和Phoenix
  • 删除表
drop table if exists ORDER_DTL;
create table if not exists ORDER_DTL(
    "id" varchar primary key,
    C1."status" varchar,
    C1."money" float,
    C1."pay_way" integer,
    C1."user_id" varchar,
    C1."operation_time" varchar,
    C1."category" varchar
) 
CONPRESSION='GZ';

UPSERT INTO "ORDER_DTL" VALUES('02602f66-adc7-40d4-8485-76b5632b5b53','已提交',4070,1,'4944191','2020-04-25 12:09:16','手机;');
UPSERT INTO "ORDER_DTL" VALUES('0968a418-f2bc-49b4-b9a9-2157cf214cfd','已完成',4350,1,'1625615','2020-04-25 12:09:37','家用电器;;电脑;');
UPSERT INTO "ORDER_DTL" VALUES('0e01edba-5e55-425e-837a-7efb91c56630','已提交',6370,3,'3919700','2020-04-25 12:09:39','男装;男鞋;');
UPSERT INTO "ORDER_DTL" VALUES('0f46d542-34cb-4ef4-b7fe-6dcfa5f14751','已付款',9380,1,'2993700','2020-04-25 12:09:46','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('1fb7c50f-9e26-4aa8-a140-a03d0de78729','已完成',6400,2,'5037058','2020-04-25 12:10:13','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('23275016-996b-420c-8edc-3e3b41de1aee','已付款',280,1,'3018827','2020-04-25 12:09:53','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('2375a7cf-c206-4ac0-8de4-863e7ffae27b','已完成',5600,1,'6489579','2020-04-25 12:08:55','食品;家用电器;');
UPSERT INTO "ORDER_DTL" VALUES('269fe10c-740b-4fdb-ad25-7939094073de','已提交',8340,2,'2948003','2020-04-25 12:09:26','男装;男鞋;');
UPSERT INTO "ORDER_DTL" VALUES('2849fa34-6513-44d6-8f66-97bccb3a31a1','已提交',7060,2,'2092774','2020-04-25 12:09:38','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('28b7e793-6d14-455b-91b3-0bd8b23b610c','已提交',640,3,'7152356','2020-04-25 12:09:49','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('2909b28a-5085-4f1d-b01e-a34fbaf6ce37','已提交',9390,3,'8237476','2020-04-25 12:10:08','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('2a01dfe5-f5dc-4140-b31b-a6ee27a6e51e','已提交',7490,2,'7813118','2020-04-25 12:09:05','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('2b86ab90-3180-4940-b624-c936a1e7568d','已付款',5360,2,'5301038','2020-04-25 12:08:50','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('2e19fbe8-7970-4d62-8e8f-d364afc2dd41','已付款',6490,0,'3141181','2020-04-25 12:09:22','食品;家用电器;');
UPSERT INTO "ORDER_DTL" VALUES('2fc28d36-dca0-49e8-bad0-42d0602bdb40','已付款',3820,1,'9054826','2020-04-25 12:10:04','家用电器;;电脑;');
UPSERT INTO "ORDER_DTL" VALUES('31477850-8b15-4f1b-9ec3-939f7dc47241','已提交',4650,2,'5837271','2020-04-25 12:08:52','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('39319322-2d80-41e7-a862-8b8858e63316','已提交',5000,1,'5686435','2020-04-25 12:08:51','家用电器;;电脑;');
UPSERT INTO "ORDER_DTL" VALUES('3d2254bd-c25a-404f-8e42-2faa4929a629','已完成',5000,1,'1274270','2020-04-25 12:08:43','男装;男鞋;');
UPSERT INTO "ORDER_DTL" VALUES('42f7fe21-55a3-416f-9535-baa222cc0098','已完成',3600,2,'2661641','2020-04-25 12:09:58','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('44231dbb-9e58-4f1a-8c83-be1aa814be83','已提交',3950,1,'3855371','2020-04-25 12:08:39','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('526e33d2-a095-4e19-b759-0017b13666ca','已完成',3280,0,'5553283','2020-04-25 12:09:01','食品;家用电器;');
UPSERT INTO "ORDER_DTL" VALUES('5a6932f4-b4a4-4a1a-b082-2475d13f9240','已提交',50,2,'1764961','2020-04-25 12:10:07','家用电器;;电脑;');
UPSERT INTO "ORDER_DTL" VALUES('5fc0093c-59a3-417b-a9ff-104b9789b530','已提交',6310,2,'1292805','2020-04-25 12:09:36','男装;男鞋;');
UPSERT INTO "ORDER_DTL" VALUES('605c6dd8-123b-4088-a047-e9f377fcd866','已完成',8980,2,'6202324','2020-04-25 12:09:54','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('613cfd50-55c7-44d2-bb67-995f72c488ea','已完成',6830,3,'6977236','2020-04-25 12:10:06','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('62246ac1-3dcb-4f2c-8943-800c9216c29f','已提交',8610,1,'5264116','2020-04-25 12:09:14','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('625c7fef-de87-428a-b581-a63c71059b14','已提交',5970,0,'8051757','2020-04-25 12:09:07','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('6d43c490-58ab-4e23-b399-dda862e06481','已提交',4570,0,'5514248','2020-04-25 12:09:34','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('70fa0ae0-6c02-4cfa-91a9-6ad929fe6b1b','已付款',4100,1,'8598963','2020-04-25 12:09:08','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('7170ce71-1fc0-4b6e-a339-67f525536dcd','已完成',9740,1,'4816392','2020-04-25 12:09:51','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('71961b06-290b-457d-bbe0-86acb013b0e3','已完成',6550,3,'2393699','2020-04-25 12:08:49','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('72dc148e-ce64-432d-b99f-61c389cb82cd','已提交',4090,1,'2536942','2020-04-25 12:10:12','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('7c0c1668-b783-413f-afc4-678a5a6d1033','已完成',3850,3,'6803936','2020-04-25 12:09:20','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('7fa02f7a-10df-4247-9935-94c8b7d4dbc0','已提交',1060,0,'6119810','2020-04-25 12:09:21','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('820c5e83-f2e0-42d4-b5f0-83802c75addc','已付款',9270,2,'5818454','2020-04-25 12:10:09','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('83ed55ec-a439-44e0-8fe0-acb7703fb691','已完成',8380,2,'6804703','2020-04-25 12:09:52','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('85287268-f139-4d59-8087-23fa6454de9d','已取消',9750,1,'4382852','2020-04-25 12:10:00','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('8d32669e-327a-4802-89f4-2e91303aee59','已提交',9390,1,'4182962','2020-04-25 12:09:57','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('8dadc2e4-63f1-490f-9182-793be64fed76','已付款',9350,1,'5937549','2020-04-25 12:09:02','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('94ad8ee0-8898-442c-8cb1-083a4b609616','已提交',4370,0,'4666456','2020-04-25 12:09:13','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('994cbb44-f0ee-45ff-a4f4-76c87bc2b972','已付款',3190,3,'3200759','2020-04-25 12:09:25','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('9ff3032c-8679-4247-9e6f-4caf2dc93aff','已提交',850,0,'8835231','2020-04-25 12:09:40','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('9ff3032c-8679-4247-9e6f-4caf2dc93aff','已付款',850,0,'8835231','2020-04-25 12:09:45','食品;家用电器;');
UPSERT INTO "ORDER_DTL" VALUES('a467ba42-f91e-48a0-865e-1703aaa45e0e','已提交',8040,0,'8206022','2020-04-25 12:09:50','家用电器;;电脑;');
UPSERT INTO "ORDER_DTL" VALUES('a5302f47-96d9-41b4-a14c-c7a508f59282','已付款',8570,2,'5319315','2020-04-25 12:08:44','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('a5b57bec-6235-45f4-bd7e-6deb5cd1e008','已提交',5700,3,'6486444','2020-04-25 12:09:27','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('ae5c3363-cf8f-48a9-9676-701a7b0a7ca5','已付款',7460,1,'2379296','2020-04-25 12:09:23','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('b1fb2399-7cf2-4af5-960a-a4d77f4803b8','已提交',2690,3,'6686018','2020-04-25 12:09:55','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('b21c7dbd-dabd-4610-94b9-d7039866a8eb','已提交',6310,2,'1552851','2020-04-25 12:09:15','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('b4bfd4b7-51f5-480e-9e23-8b1579e36248','已提交',4000,1,'3260372','2020-04-25 12:09:35','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('b63983cc-2b59-4992-84c6-9810526d0282','已提交',7370,3,'3107867','2020-04-25 12:08:45','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('bf60b752-1ccc-43bf-9bc3-b2aeccacc0ed','已提交',720,2,'5034117','2020-04-25 12:09:03','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('c808addc-8b8b-4d89-99b1-db2ed52e61b4','已提交',3630,1,'6435854','2020-04-25 12:09:10','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('cc9dbd20-cf9f-4097-ae8b-4e73db1e4ba1','已付款',5000,0,'2007322','2020-04-25 12:08:38','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('ccceaf57-a5ab-44df-834a-e7b32c63efc1','已提交',2660,2,'7928516','2020-04-25 12:09:42','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('d7be5c39-e07c-40e8-bf09-4922fbc6335c','已付款',8750,2,'1250995','2020-04-25 12:09:09','食品;家用电器;');
UPSERT INTO "ORDER_DTL" VALUES('dfe16df7-4a46-4b6f-9c6d-083ec215218e','已完成',410,0,'1923817','2020-04-25 12:09:56','家用电器;;电脑;');
UPSERT INTO "ORDER_DTL" VALUES('e1241ad4-c9c1-4c17-93b9-ef2c26e7f2b2','已付款',6760,0,'2457464','2020-04-25 12:08:54','数码;女装;');
UPSERT INTO "ORDER_DTL" VALUES('e180a9f2-9f80-4b6d-99c8-452d6c037fc7','已完成',8120,2,'7645270','2020-04-25 12:09:32','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('e4418843-9ac0-47a7-bfd8-d61c4d296933','已付款',8170,2,'7695668','2020-04-25 12:09:11','家用电器;;电脑;');
UPSERT INTO "ORDER_DTL" VALUES('e8b3bb37-1019-4492-93c7-305177271a71','已完成',2560,2,'4405460','2020-04-25 12:10:05','男装;男鞋;');
UPSERT INTO "ORDER_DTL" VALUES('eb1a1a22-953a-42f1-b594-f5dfc8fb6262','已完成',2370,2,'8233485','2020-04-25 12:09:24','机票;文娱;');
UPSERT INTO "ORDER_DTL" VALUES('ecfd18f5-45f2-4dcd-9c47-f2ad9b216bd0','已付款',8070,3,'6387107','2020-04-25 12:09:04','酒店;旅游;');
UPSERT INTO "ORDER_DTL" VALUES('f1226752-7be3-4702-a496-3ddba56f66ec','已付款',4410,3,'1981968','2020-04-25 12:10:10','维修;手机;');
UPSERT INTO "ORDER_DTL" VALUES('f642b16b-eade-4169-9eeb-4d5f294ec594','已提交',4010,1,'6463215','2020-04-25 12:09:29','男鞋;汽车;');
UPSERT INTO "ORDER_DTL" VALUES('f8f3ca6f-2f5c-44fd-9755-1792de183845','已付款',5950,3,'4060214','2020-04-25 12:09:12','机票;文娱;');
  • 不创建索引查询
select "status", "money", "pay_way", "user_id" from ORDER_DTL WHERE "status" = '已提交';
explain select "status", "money", "pay_way", "user_id" from ORDER_DTL WHERE "status" = '已提交' AND "pay_way" = 1;
  • 创建本地索引
create local index LOCAL_IDX_ORDER_DTL on ORDER_DTL("id", "status", "money", "pay_way", "user_id");
  • 基于本地索引查询
select * from ORDER_DTL WHERE "status" = '已提交';
explain select * from ORDER_DTL WHERE "status" = '已提交' AND "pay_way" = 1;

函数索引(了解)

  1. 概念
    可以基于一个函数表达式去构建索引

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