soumyakanti3578 commented on code in PR #6315:
URL: https://github.com/apache/hive/pull/6315#discussion_r2825030145
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ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/HiveRelOptUtil.java:
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@@ -1107,7 +1107,15 @@ public static List<RelFieldCollation>
getNewRelFieldCollations(
Set<Integer> needed = new HashSet<>();
for (RelFieldCollation fc : sortCollation.getFieldCollations()) {
needed.add(fc.getFieldIndex());
- final RexNode node =
project.getProjects().get(map.getTarget(fc.getFieldIndex()));
+ int target;
+ try {
+ target = map.getTarget(fc.getFieldIndex());
+ } catch (Mappings.NoElementException e) {
+ // If there is no mapping for this field, we cannot push down the sort
+ LOG.error("Missing target mapping: {}", e.toString());
+ return null;
+ }
Review Comment:
Thanks for pointing me to this API, I was trying to find something like this!
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