Steve Carlin created IMPALA-11766:
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Summary: In HdfsScanNode.buildBinaryStatsPredicate, an Expr needs
to be cloned
Key: IMPALA-11766
URL: https://issues.apache.org/jira/browse/IMPALA-11766
Project: IMPALA
Issue Type: Bug
Components: Frontend
Reporter: Steve Carlin
In HdfsScanNode.buildBinaryStatsPredicate exists the following code:
{code:java}
private void buildBinaryStatsPredicate(Analyzer analyzer, SlotRef inputSlot,
BinaryPredicate inputPred, BinaryPredicate.Operator op) {
// Obtain the rhs expr of the input predicate
Expr constExpr = inputPred.getChild(1);
...
BinaryPredicate statsPred = new BinaryPredicate(op, slot, constExpr);{code}
This contains a potential bug. The constExpr is mutable and the creation of
the new BinaryPredicate can change the innards of the inputPred Expr.
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