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commit 876b9bbcf05ad9e793c3e6220cc40094e26b0723
Author: bridget <[email protected]>
AuthorDate: Thu Dec 19 17:40:42 2019 -0800
minor edits
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.../010-connect-a-data-source-introduction.md | 13 ++-----------
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---
title: "Connect a Data Source Introduction"
-date: 2019-12-19
+date: 2019-12-20
parent: "Connect a Data Source"
---
-A storage plugin is a software module for connecting Drill to data sources. A
storage plugin typically optimizes execution of Drill queries, provides the
location of the data, and configures the workspace and file formats for reading
data. Drill has several storage plugins than you can configure to suit your
environment. Through a storage plugin, Drill connects to a data source, such as
a database, a file on a local or distributed file system, or a Hive metastore.
You can modify the defa [...]
+Drill includes several storage plugins than you can configure for your
environment. A storage plugin is a software module for connecting Drill to data
sources, such as databases and local or distributed file systems. A storage
plugin typically optimizes Drill queries, provides the location of the data,
and stores the workspace and file formats for reading data. Storage plugins
also perform scanner and writer functions and informs the execution engine of
any native capabilities, such as p [...]
When you run a query, Drill gets the storage plugin configuration name in one
of several ways:
* The FROM clause of the query can identify the plugin to use.
* The USE <plugin name> command can precede the query.
* You can specify the storage plugin when starting Drill.
-
-## Storage Plugin Internals
-The following image represents the storage plugin layer between Drill and a
-data source:
-
-
-
-In addition to the previously mentioned functions, a storage plugin performs
scanner and writer functions and informs the execution engine of any native
capabilities, such
-as predicate pushdown, joins, and SQL.
