Csaba Ringhofer created IMPALA-10985:
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Summary: always_true hint is not needed if all predicates are on
partitioning columns
Key: IMPALA-10985
URL: https://issues.apache.org/jira/browse/IMPALA-10985
Project: IMPALA
Issue Type: Improvement
Reporter: Csaba Ringhofer
IMPALA-10314 added always_true hint that leads to assuming that a file in a
table will return at least on row even if there is a WHERE clause. Currently we
need to add it even if all columns used in the WHERE are partitioning columns.
This is not needed, as these predicates can't drop any more rows after
partition pruning.
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