Jackie-Jiang commented on code in PR #10982:
URL: https://github.com/apache/pinot/pull/10982#discussion_r1247531397


##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/utils/TableConfigUtils.java:
##########
@@ -42,6 +42,7 @@
 import org.apache.pinot.common.request.context.RequestContextUtils;
 import org.apache.pinot.common.tier.TierFactory;
 import org.apache.pinot.common.utils.config.TagNameUtils;
+import org.apache.pinot.segment.local.aggregator.ValueAggregatorFactory;

Review Comment:
   This is not the correct `ValueAggregatorFactory`. We should import 
`org.apache.pinot.core.segment.processing.aggregator.ValueAggregatorFactory` 
which is used for `RealtimeToOfflineTask`



##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/utils/TableConfigUtils.java:
##########
@@ -523,8 +524,17 @@ static void validateTaskConfigs(TableConfig tableConfig, 
Schema schema) {
             if (entry.getKey().endsWith(".aggregationType")) {
               
Preconditions.checkState(columnNames.contains(StringUtils.removeEnd(entry.getKey(),
 ".aggregationType")),
                   String.format("Column \"%s\" not found in schema!", 
entry.getKey()));
-              Preconditions.checkState(ImmutableSet.of("SUM", "MAX", 
"MIN").contains(entry.getValue().toUpperCase()),
-                  String.format("Column \"%s\" has invalid aggregate type: 
%s", entry.getKey(), entry.getValue()));
+              try {
+                // check that it's a valid aggregation function type
+                AggregationFunctionType aft = 
AggregationFunctionType.valueOf(entry.getValue().toUpperCase());

Review Comment:
   ```suggestion
                   AggregationFunctionType aft = 
AggregationFunctionType.getAggregationFunctionType(entry.getValue());
   ```



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