wernerdv commented on code in PR #12185:
URL: https://github.com/apache/ignite/pull/12185#discussion_r2210416276


##########
modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/messages/StatisticsColumnData.java:
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@@ -25,7 +26,7 @@
 /**
  * Statistics by column (or by set of columns, if they collected together)
  */
-public class StatisticsColumnData implements Message {
+public class StatisticsColumnData implements Message, Serializable {

Review Comment:
   StatisticsObjectData class is marshaled using JdkMarshaller and contains 
field `private Map<String, StatisticsColumnData> data`.
   If you remove Serializable interface from StatisticsColumnData, 
StatisticsCommandDdlIntegrationTest will fail.



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