I am trying to run a simple query against an External Impala table with Parquet files. When submitting the statement 'select sum(avgval) from test; I receive the following error: 'Backend 0:Unexpected dictionary page. Dictionary page is only supported for string types.' The avgval field is defined as int.
Any ideas why this is happening and how to fix it?
Please upgrade to the latest version. You've using a version that does not support the entire parquet file format spec.
Out of curiosity, what did you use to generate the parquet files? I suspect it is newer writer.