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O'Reilly Platform
book
Presto实战
by
Matt Fuller
,
Manfred Moser
,
Martin Traverso
March 2021
Intermediate to advanced
265 pages
6h 50m
Chinese
Posts & Telecom Press
Content preview from
Presto实战
96
第
7
章
高级连接器实例
第
6
章中
,
你学习了
Presto
提供的一些连接器以及如何配置它们,本章会把这些知识扩展
到一些比较复杂的使用场景和连接器。这些连接器通常需要翻译来自底层数据源的存储模
式和思想,而这些数据源并不容易映射到
SQL
和
Presto
的面向表的模型上。
若打算通过
Presto
连接并用
SQL
查询特定的系统,你可以直接跳到对应章节来了解更多。
•
7.1
节,用
Phoenix
连接到
Hbase
。
•
7.2
节,键值存储连接器示例:
Accumulo
。
•
7.3
节,
ApacheCassandra
连接器。
•
7.4
节,流系统连接器示例:
Kafka
。
•
7.5
节,文档存储连接器示例:
Elasticsearch
。
在了解这些连接器之后,你可以通过学习
7.6
节
中的联邦查询和相关的
ETL
用法来进一
步完善你的理解。
7.1
用
Phoenix
连接
HBase
分布式、可扩展的大数据存储
Apache
HBase
构建在
HDFS
之上,但用户并不一定通过
Hive
连接器访问低层的
HDFS
。
Apache
Phoenix
项目提供了一个
SQL
层来访问
HBase
,得
益于
PrestoPhoenix
连接器,用户可以像其他数据源一样从
Presto
访问
HBase
数据库。
和之前一样,你只需要一个
catalog
文件,比如
etc/catalog/bigtables.properties
。
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Publisher Resources
ISBN: 9787115560056