Volodymyr Vysotskyi created DRILL-7313: ------------------------------------------
Summary: Use Hive schema for MaprDB native reader when field was empty Key: DRILL-7313 URL: https://issues.apache.org/jira/browse/DRILL-7313 Project: Apache Drill Issue Type: Task Affects Versions: 1.16.0 Reporter: Volodymyr Vysotskyi Assignee: Volodymyr Vysotskyi Fix For: 1.17.0 Currently, when an external Hive MaprDB table is queried using hive plugin with enabled {{store.hive.maprdb_json.optimize_scan_with_native_reader}}, some queries may fail due to soft schema change, though Hive knows actual data types. For example, when we have a table with several fields, and one of them has only several non-null values, queries with grouping by such field will fail due to schema change. The goal of this Jira is to allow using types from Hive when a non-existing field is created, so it will allow avoiding such issues. -- This message was sent by Atlassian JIRA (v7.6.3#76005)