zabetak commented on code in PR #5978:
URL: https://github.com/apache/hive/pull/5978#discussion_r2218685398
##########
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveUnionSimpleSelectsToInlineTableRule.java:
##########
@@ -218,6 +218,18 @@ private boolean isInlineTableOperand(RelNode input) {
if (input.getInputs().size() == 0) {
return true;
}
+ RexNode call = ((HiveTableFunctionScan) input).getCall();
+ if (!(call instanceof RexCall)) {
+ return false;
+ }
+ // there should be operands present, if not return false
+ if (((RexCall) call).getOperands().size() == 0) {
+ return false;
+ }
+ // the operands should be of type RexCall, if not return false
+ if (!(((RexCall) call).getOperands().get(0) instanceof RexCall)) {
+ return false;
+ }
Review Comment:
We will keep this for now and revisit the rule if/when it fails again.
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