Github user sraghunandan commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2568#discussion_r207433636
--- Diff: integration/presto/presto-integration-in-carbondata.md ---
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+
+# PRESTO INTEGRATION IN CARBONDATA
+
+1. [Document Purpose](#document-purpose)
+ 1. [Purpose](#purpose)
+ 1. [Scope](#scope)
+ 1. [Definitions and Acronyms](#definitions-and-acronyms)
+1. [Requirements addressed](#requirements-addressed)
+1. [Design Considerations](#design-considerations)
+ 1. [Row Iterator Implementation](#row-iterator-implementation)
+ 1. [ColumnarReaders or StreamReaders
approach](#columnarreaders-or-streamreaders-approach)
+1. [Module Structure](#module-structure)
+1. [Detailed design](#detailed-design)
+ 1. [Modules](#modules)
+ 1. [Functions Developed](#functions-developed)
+1. [Integration Tests](#integration-tests)
+1. [Tools and languages used](#tools-and-languages-used)
+1. [References](#references)
+
+## Document Purpose
+
+ * #### _Purpose_
+ The purpose of this document is to outline the technical design of the
Presto Integration in CarbonData.
+
+ Its main purpose is to -
+ * Provide the link between the Functional Requirement and the detailed
Technical Design documents.
+ * Detail the functionality which will be provided by each component or
group of components and show how the various components interact in the design.
+
+ This document is not intended to address installation and configuration
details of the actual implementation. Installation and configuration details
are provided in technology guides provided on CarbonData wiki page.As is true
with any high level design, this document will be updated and refined based on
changing requirements.
+ * #### _Scope_
+ Presto Integration with CarbonData will allow execution of CarbonData
queries on the Presto CLI. Â CarbonData can be added easily as a Data Source
among the multiple heterogeneous data sources for Presto.
+ * #### _Definitions and Acronyms_
+ **CarbonData :** CarbonData is a fully indexed columnar and Hadoop
native data-store for processing heavy analytical workloads and detailed
queries on big data. In customer benchmarks, CarbonData has proven to manage
Petabyte of data running on extraordinarily low-cost hardware and answers
queries around 10 times faster than the current open source solutions
(column-oriented SQL on Hadoop data-stores).
+
+ **Presto :** Presto is a distributed SQL query engine designed to query
large data sets distributed over one or more heterogeneous data sources.
+
+## Requirements addressed
+This integration of Presto mainly serves two purpose:
+ * Support of Apache CarbonData as Data Source in Presto.
+ * Execution of Apache CarbonData Queries on Presto.
+
+## Design Considerations
--- End diff --
Can we add a design from presto which talks about integration of data
sources
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