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  1. Hive
  2. HIVE-16878

Hive concatenation can generate corrupted ORC

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 1.2.1
    • Fix Version/s: None
    • Component/s: ORC
    • Labels:
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      Description

      Hive concatenation generates corrupted (and therefore unreadable) ORC if there are ORC files with different schema in the same table/partition.
      This may happen, for instance, if you put some data in a table, then you add a new column and you put some other data. In this case, running the ORC concatenation leads to a corrupted ORC file.
      I think that the right behavior would be not to concatenate ORC files with different schema.

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