Chris Drome created HIVE-7189:
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Summary: Hive does not store column names in ORC
Key: HIVE-7189
URL: https://issues.apache.org/jira/browse/HIVE-7189
Project: Hive
Issue Type: Bug
Components: File Formats
Affects Versions: 0.13.0, 0.12.0
Reporter: Chris Drome
We uncovered the following discrepancy between writing ORC files through Pig
and Hive:
ORCFile header contains the name of the columns. Storing through Pig
(ORCStorage or HCatStorer), the column names are stored fine. But when stored
through hive they are stored as _col0, _col1,....,_col99 and hive uses the
partition schema to map the column names. Reading the same file through Pig
then has problems as user will have to manually map columns.
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