scarlin-cloudera commented on code in PR #4442:
URL: https://github.com/apache/hive/pull/4442#discussion_r1244463980
##########
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/translator/PlanModifierForASTConv.java:
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@@ -382,6 +387,10 @@ private static boolean validExchangeChild(HiveSortExchange
sortNode) {
return sortNode.getInput() instanceof Project;
}
+ private static boolean validTableFunctionScanChild(HiveTableFunctionScan
htfsNode) {
+ return htfsNode.getInput(0) instanceof Project || htfsNode.getInput(0)
instanceof HiveTableScan;
Review Comment:
Put in code to handle the empty case.
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