apache / carbondata / 431

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jenkins

[CARBONDATA-2474] Support Modular Plan for Materialized View DataMap

Currently carbon supports preaggregate datamap, which only supports preaggregate on single table. To improve it, we can add join capability by implementing Materialized View.

In carbon Materialized View, Modular Plan is the basic abstraction for materialized view query plan. In this PR, modular plan module is added, it defines plan tree structure and conversion from Spark Logical Plan.

This closes #2301

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