xiangfu0 commented on code in PR #19247:
URL: https://github.com/apache/pinot/pull/19247#discussion_r3847994221
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pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseSingleStageBrokerRequestHandler.java:
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@@ -2116,6 +2116,20 @@ private void computeResultsForExpression(Expression
expression, String[] columnN
List<Expression> operands = function.getOperands();
computeResultsForExpression(operands.get(0), columnNames, columnTypes,
values, index);
columnNames[index] = operands.get(1).getIdentifier().getName();
+ } else if (operator.equals("arrayvalueconstructor")) {
Review Comment:
You're right. I over-indexed on old-reader wire compatibility here. A
pre-change server can deserialize the constructor's scalar operands, but its
has no case, so it still cannot execute a literal. Because the feature itself
therefore requires upgraded servers, retaining the constructor does not provide
usable rolling-upgrade compatibility; it only adds a different failure path.
I'll fold into the new Thrift arm like the other arrays, remove the broker
special case, and update the compatibility test.
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