I think the reality is now that both are great technologies and the overlap in use cases is pretty big - there are a lot of SQL workloads where either can work.   I just wanted to clarify a few points.   Impala does support querying complex types from Parquet - https://docs.cloudera.com/documentation/enterprise/latest/topics/impala_complex_types.html   We also are working on a transparent query retry feature in Impala that should be released soon. ... View more