Jesus Camacho Rodriguez created HIVE-11056:
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Summary: Boolean property to specify if an operator can project
columns out of the input tuples
Key: HIVE-11056
URL: https://issues.apache.org/jira/browse/HIVE-11056
Project: Hive
Issue Type: Bug
Reporter: Jesus Camacho Rodriguez
Assignee: Hari Sankar Sivarama Subramaniyan
Some operators such as SEL or RS can project columns out of the input tuples;
however, some others will just forward the input tuples and do not project
columns out of them e.g. FIL will forward the input tuples if the condition
evaluates to true, without modifying them.
We want to have a boolean property to differentiate between this kind of
operators. This may help simplifying the code e.g. for ColumnPruner optimizer.
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