QiangCai commented on a change in pull request #3661: [CARBONDATA-3704] Support
create materialized view on all type table, and make mv support mutil-tenant.
URL: https://github.com/apache/carbondata/pull/3661#discussion_r401314484
##########
File path:
core/src/main/java/org/apache/carbondata/core/datamap/DataMapProvider.java
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@@ -48,20 +48,20 @@
import org.apache.log4j.Logger;
/**
- * DataMap is a accelerator for certain type of query. Developer can add new
DataMap
+ * Index is a accelerator for certain type of query. Developer can add new
Index
* implementation to improve query performance.
*
- * Currently two types of DataMap are supported
+ * Currently two types of Index are supported
* <ol>
- * <li> MVDataMap: materialized view type of DataMap to accelerate olap
style query,
+ * <li> MVDataMap: materialized view type of Index to accelerate olap style
query,
* like SPJG query (select, predicate, join, groupby) </li>
- * <li> DataMap: index type of DataMap to accelerate filter query </li>
+ * <li> Index: index type of Index to accelerate filter query </li>
* </ol>
*
* <p>
* In following command <br>
* {@code CREATE DATAMAP dm ON TABLE main USING 'provider'}, <br>
Review comment:
do we still have this SQL syntax?
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