Jason Dere created HIVE-7971:
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Summary: Support alter table change/replace/add columns for
existing partitions
Key: HIVE-7971
URL: https://issues.apache.org/jira/browse/HIVE-7971
Project: Hive
Issue Type: Bug
Reporter: Jason Dere
Assignee: Jason Dere
ALTER TABLE CHANGE COLUMN is allowed for tables, but not for partitions. Same
for add/replace columns.
Allowing this for partitions can be useful in some cases. For example, one user
has tables with Hive 0.12 Decimal columns, which do not specify
precision/scale. To be able to properly read the decimal values from the
existing partitions, the column types in the partitions need to be changed to
decimal types with precision/scale.
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