Hi all,
AFAIK, Impala has not supported Date type, which describes a particular year/month/day, in the form YYYY-MM-DD, in Hive. However, Hive has supported Date type in Parquet two years ago in Hive-1.2.0. (See https://issues.apache.org/jira/browse/HIVE-8119 and https://cwiki.apache.org/confluence/display/Hive/Parquet#Parquet-VersionsandLimitations.) I know that we have Timestamp type which can totally cover the Date type. But we have huge legacy data in our Hive warehouse containing the Date type. It's inconvenient that each time we have to convert the data we need into types Impala supports. Do we have some discussion before about this? Is this blocked by the fact that the latest CDH still uses Hive-1.1.0? Finally, do we plan to support Date type? Thanks, Quanlong
