korlov42 commented on code in PR #2476:
URL: https://github.com/apache/ignite-3/pull/2476#discussion_r1302996825
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modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/exec/exp/agg/GroupKey.java:
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@@ -19,13 +19,16 @@
import static org.apache.ignite.internal.util.ArrayUtils.OBJECT_EMPTY_ARRAY;
+import java.io.Serializable;
import java.util.Arrays;
import org.jetbrains.annotations.Nullable;
/**
* A fixed length group key used by execution node.
*/
-public class GroupKey {
+public class GroupKey implements Serializable {
Review Comment:
I'm wondering how it works without implementing Serializable... Anyway, the
ticket that addresses mentioned place has been merged to main moment ago
(IGNITE-19992). I hope this won't be a blocker for you anymore
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