commit f8a157327c4769ad586b8efd026f0e1a943bcf1e
author QiangCai <qiangcai@qq.com> Sat Jan 11 18:12:01 2020 +0800
committer Jacky Li <jacky.likun@qq.com> Mon Jan 20 00:56:31 2020 +0800
tree cd11e7f6df463594c30ad1c287aa71678d3b5b43
parent 6353024a8a2698801724f781e7e7704eaa997005

[CARBONDATA-3503] Optimize Carbon SparkExtensions

Why is this PR needed?

Current Carbon Spark extension does not support following features:
1. not support mv
2. Parser still use CarbonSqlAstBuilder
3. still use CarbonSession to run some test cases

What changes were proposed in this PR?

Enhance Carbon Spark Extension as following:
1. new order of parsers (CarbonParser->SparkParser)
it means CarbonParser will parser SQL firstly, which will match only carbon's particular SQL.

CreateTable:
1. CarbonExtnesion only support "stored as carbondata" and "using carbondata"
2. use CarbonCreateDataSourceTableCommand instead of CarbonCreateTableCommand
so there is no hard coded SQL to create a data source table

DataMap:
1. support MV

TestCases:
1. remove spark-carbon-common-test module, move test back to spark-common-test module
2. all test cases will be run using SparkSession with Carbon Extension

Example:
1. only CarbonSessionExample use CarbonSession, others will use SparkSession with Carbon Extension

Others:
1. support custom lock interface
2. support database location provider interface

Does this PR introduce any user interface change?
Yes. (please explain the change and update document)

Is any new testcase added?
Yes

This closes #3574