PARQUET_FALLBACK_SCHEMA_RESOLUTION Query Option (Impala 2.6 or higher only)

The PARQUET_FALLBACK_SCHEMA_RESOLUTION query option allows Impala to look up columns within Parquet files by column name, rather than column order, when necessary. The allowed values are:

Usage notes:

By default, Impala looks up columns within a Parquet file based on the order of columns in the table. The name setting for this option enables behavior for Impala queries similar to the Hive setting parquet.column.index access=false. It also allows Impala to query Parquet files created by Hive with the parquet.column.index.access=false setting in effect.

Type: integer or string

Added in: Impala 2.6.0

Related information:

Schema Evolution for Parquet Tables