Ravi Kapoor created CALCITE-3784:
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Summary: RexCall toString digest gives OOM while huge expression
is evaluated
Key: CALCITE-3784
URL: https://issues.apache.org/jira/browse/CALCITE-3784
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Ravi Kapoor
I have some complex query which has tens of thousands of rex expressions and
this expression is used in filter expression in the query.
On creating a filter below code gets called:
public RelBuilder filter(Iterable<CorrelationId> variablesSet,
Iterable<? extends RexNode> predicates) {
final RexNode simplifiedPredicates =
simplifier.simplifyFilterPredicates(predicates);
if (simplifiedPredicates == null) {
return empty();
}
RexSimplify further adds the rexnode in the Set<RexNode> calling hashcode()
internally which calls toString()
Is there any way to avoid this computeDigest Call which creates complex string
object and blows up the RAM about 14GB?
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