Since CDH 5.8 you can use  set PARQUET_FALLBACK_SCHEMA_RESOLUTION=1; to look up columns within Parquet files by column name. For more, see: https://www.cloudera.com/documentation/enterprise/latest/topics/impala_parquet_fallback_schema_resolution.html     ... View more

What is the maximum number of partitions an external impala table can have? ... View more

Indeed there is, and the issue has been fixed! See: https://issues.cloudera.org/browse/IMPALA-2974   You can work around that specific problem in Impala by using the following syntax.   ALTER TABLE A REPLACE COLUMNS (complete list of column definitions)   My apologies for the inconvenience. ... View more

Yea :). Thanks everyone for your reports and JIRA contricutions! ... View more