zhangbutao commented on code in PR #4700:
URL: https://github.com/apache/hive/pull/4700#discussion_r1332435086
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/UpdateDeleteSemanticAnalyzer.java:
##########
@@ -177,39 +169,41 @@ private void reparseAndSuperAnalyze(ASTNode tree, Table
mTable, ASTNode tabNameN
ASTNode where = null;
int whereIndex = deleting() ? 1 : 2;
+
if (children.size() > whereIndex) {
where = (ASTNode)children.get(whereIndex);
assert where.getToken().getType() == HiveParser.TOK_WHERE :
"Expected where clause, but found " + where.getName();
+
+ if (copyOnWriteMode) {
Review Comment:
If this is only aimed for `delete `COW, i think we can using a more proper
term. Maybe `copyOnWriteDeleteMode`?.
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