Jesus Camacho Rodriguez created HIVE-14021:
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Summary: When converting to CNF, fail if the expression exceeds a
threshold
Key: HIVE-14021
URL: https://issues.apache.org/jira/browse/HIVE-14021
Project: Hive
Issue Type: Bug
Components: CBO
Affects Versions: 2.1.0, 2.2.0
Reporter: Jesus Camacho Rodriguez
Assignee: Jesus Camacho Rodriguez
When converting to conjunctive normal form (CNF), fail if the expression
exceeds a threshold. CNF can explode exponentially in the size of the input
expression, but rarely does so in practice. Add a maxNodeCount parameter to
RexUtil.toCnf and throw or return null if it is exceeded.
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