[jira] [Created] (HIVE-8371) HCatStorer should fail by default when publishing to an existing partition

["Thiruvel Thirumoolan (JIRA)" <ji...@apache.org>]

Thiruvel Thirumoolan created HIVE-8371:
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             Summary: HCatStorer should fail by default when publishing to an existing partition
                 Key: HIVE-8371
                 URL: https://issues.apache.org/jira/browse/HIVE-8371
             Project: Hive
          Issue Type: Bug
          Components: HCatalog
    Affects Versions: 0.13.1, 0.13.0, 0.14.0
            Reporter: Thiruvel Thirumoolan


In Hive-12 and before (on in previous HCatalog releases) HCatStorer would fail if the partition already exists (whether before launching the job or during commit depending on the partitioning). HIVE-6406 changed that behavior and by default does an append. This causes data quality issues since an rerun (or duplicate run) won't fail (when it used to) and will just append to the partition.

A preferable approach would be to leave HCatStorer behavior as is (fail during a duplicate publish) and support append through an option. Overwrite also can be implemented in a similar fashion. Eg:

store A into 'db.table' using org.apache.hive.hcatalog.pig.HCatStorer('partspec', '', ' -append');



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