[jira] [Created] (DRILL-4764) Parquet file with INT_16 logical type not supported by simple SELECT

["Paul Rogers (JIRA)" <ji...@apache.org>]

Paul Rogers created DRILL-4764:
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             Summary: Parquet file with INT_16 logical type not supported by simple SELECT
                 Key: DRILL-4764
                 URL: https://issues.apache.org/jira/browse/DRILL-4764
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Data Types
    Affects Versions: 1.6.0
            Reporter: Paul Rogers


Create a Parquet file with the following schema:

message int16Data { required int32 index; required int32 value (INT_16); }

Store it as int_16.parquet in the local file system. Query it with:

SELECT * from `local`.`root`.`int_16.parquet`;

The result, in the web UI, is this error:

org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR: UnsupportedOperationException: unsupported type: INT32 INT_16 Fragment 0:0 [Error Id: c63f66b4-e5a9-4a35-9ceb-546b74645dd4 on 172.30.1.28:31010]

The INT_16 logical (or "original") type simply tells consumers of the file that the data is actually a 16-bit signed int. Presumably, this should tell Drill to use the SmallIntVector (or NullableSmallIntVector) class for storage. Without supporting this annotation, even 16-bit integers must be stored as 32-bits within Drill.



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