vvivekiyer commented on code in PR #15350:
URL: https://github.com/apache/pinot/pull/15350#discussion_r2060710596
##########
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseSingleStageBrokerRequestHandler.java:
##########
@@ -1729,6 +1729,7 @@ static void updateColumnNames(String rawTableName,
PinotQuery pinotQuery, boolea
hasStar = true;
}
}
+ pinotQuery.setSelectStarQuery(hasStar);
Review Comment:
can we use queryOption to pass this detail to the server?
##########
pinot-common/src/thrift/query.thrift:
##########
@@ -32,6 +32,7 @@ struct PinotQuery {
11: optional map<string, string> queryOptions;
12: optional bool explain;
13: optional map<Expression, Expression> expressionOverrideHints;
+ 14: optional bool selectStarQuery;
Review Comment:
+1 . Let's use queryOption to pass this detail to the server.
##########
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseSingleStageBrokerRequestHandler.java:
##########
@@ -1729,6 +1729,7 @@ static void updateColumnNames(String rawTableName,
PinotQuery pinotQuery, boolea
hasStar = true;
}
}
+ pinotQuery.setSelectStarQuery(hasStar);
Review Comment:
Can you test how this works in Multistage query execution? The problem
should remain the same during leaf-stage processing. We should fix it there as
well. Or at least leave a TODO.
##########
pinot-core/src/main/java/org/apache/pinot/core/operator/combine/merger/SelectionOnlyResultsBlockMerger.java:
##########
@@ -46,15 +50,42 @@ public void mergeResultsBlocks(SelectionResultsBlock
mergedBlock, SelectionResul
DataSchema mergedDataSchema = mergedBlock.getDataSchema();
DataSchema dataSchemaToMerge = blockToMerge.getDataSchema();
assert mergedDataSchema != null && dataSchemaToMerge != null;
- if (!mergedDataSchema.equals(dataSchemaToMerge)) {
- String errorMessage =
- String.format("Data schema mismatch between merged block: %s and
block to merge: %s, drop block to merge",
+ QueryContext mergedQueryContext = mergedBlock.getQueryContext();
Review Comment:
We also need this logic in SelectionOnlyOrderByResultBlockMerger.
Please make the changes there as well.
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