Hive can create and query MapR-DB tables via maprdb-json-handler:
The aim of this Jira to implement Drill native reader for Hive MapR-DB tables (similar to parquet).
Design proposal is:
- to use JsonTableGroupScan instead of HiveScan;
- to add storage planning rule to convert HiveScan to MapRDBGroupScan;
- to add system/session option to enable using of this native reader;
- native reader can be used only for Drill build with mapr profile (there is no reason to leverage it for default profile);
two new options were added:
store.hive.parquet.optimize_scan_with_native_reader is new option used instead of store.hive.optimize_scan_with_native_readers. The latter is deprecated and will be removed in 1.15.