Kevin Wilfong created HIVE-4312:
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Summary: Make ORC SerDe support replace columns
Key: HIVE-4312
URL: https://issues.apache.org/jira/browse/HIVE-4312
Project: Hive
Issue Type: Improvement
Components: Serializers/Deserializers
Affects Versions: 0.11.0
Reporter: Kevin Wilfong
In the alterTable method of DDLTask.java there is an explicit list of SerDes
which support the replace columns command. ORC should support this, at least
for partitioned tables, maybe not unpartitioned tables.
This may be as simple as adding it to that list, but I suspect some significant
changes will be needed to make this work the the CombineHiveInputFormat (e.g.
where are combined and one split has a column stored as a string and in the
other it is stored as an int).
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