-Re: Parquet support (HIVE-5783)
Alan Gates 2014-02-18, 17:49
Gunther, is it the case that there is anything extra that needs to be done to ship Parquet code with Hive right now? If I read the patch correctly the Parquet jars were added to the pom and thus will be shipped as part of Hive. As long as it works out of the box when a user says “create table … stored as parquet” why do we care whether the parquet jar is owned by Hive or another project?
The concern about feature mismatch in Parquet versus Hive is valid, but I’m not sure what to do about it other than assure that there are good error messages. Users will often want to use non-Hive based storage formats (Parquet, Avro, etc.). This means we need a good way to detect at SQL compile time that the underlying storage doesn’t support the indicated data type and throw a good error.
Also, it’s important to be clear going forward about what Hive as a project is signing up for. If tomorrow someone decides to add a new datatype or feature we need to be clear that we expect the contributor to make this work for Hive owned formats (text, RC, sequence, ORC) but not necessarily for external formats (Parquet, Avro).
On Feb 17, 2014, at 7:03 PM, Gunther Hagleitner <[EMAIL PROTECTED]> wrote:
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