Jackie-Jiang commented on code in PR #11762:
URL: https://github.com/apache/pinot/pull/11762#discussion_r1355936238
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pinot-core/src/main/java/org/apache/pinot/core/query/reduce/BrokerReduceService.java:
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@@ -99,8 +119,23 @@ public BrokerResponseNative reduceOnDataTable(BrokerRequest
brokerRequest, Broke
// Set execution statistics and Update broker metrics.
aggregator.setStats(rawTableName, brokerResponseNative, brokerMetrics);
+ // Report the servers with conflicting data schema.
+ if (!serversWithConflictingDataSchema.isEmpty()) {
+ String errorMessage =
+ String.format("%s: responses for table: %s from servers: %s got
dropped due to data schema inconsistency.",
+ QueryException.MERGE_RESPONSE_ERROR.getMessage(), tableName,
serversWithConflictingDataSchema);
+ LOGGER.warn(errorMessage);
+ if (brokerMetrics != null) {
+ brokerMetrics.addMeteredTableValue(rawTableName,
BrokerMeter.RESPONSE_MERGE_EXCEPTIONS, 1L);
+ }
+ brokerResponseNative.addToExceptions(
+ new
QueryProcessingException(QueryException.MERGE_RESPONSE_ERROR_CODE,
errorMessage));
+ }
+
// NOTE: When there is no cached data schema, that means all servers
encountered exception. In such case, return the
// response with metadata only.
+ DataSchema cachedDataSchema =
Review Comment:
The comment is about cached data schema, so I feel it is fine putting it here
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