ygerzhedovich commented on code in PR #1501:
URL: https://github.com/apache/ignite-3/pull/1501#discussion_r1087882834
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modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/metadata/ColocationGroup.java:
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@@ -194,30 +186,73 @@ public ColocationGroup colocate(ColocationGroup other)
throws ColocationMappingE
return new ColocationGroup(sourceIds, nodeNames, assignments);
}
+ private List<NodeWithTerm> intersect(List<NodeWithTerm> assign0,
List<NodeWithTerm> assign1, @Nullable Set<String> filter, int partId)
+ throws ColocationMappingException {
+ List<NodeWithTerm> intersection = new ArrayList<>();
+
+ for (NodeWithTerm nodeWithTerm : assign0) {
+ if (filter != null && !filter.contains(nodeWithTerm.name())) {
+ continue;
+ }
+
+ for (NodeWithTerm otherNodeWithTerm : assign1) {
+ if (!otherNodeWithTerm.name().equals(nodeWithTerm.name())) {
+ continue;
+ }
+
+ if (nodeWithTerm.term() != otherNodeWithTerm.term()) {
+ throw new ColocationMappingException("Raft group primary
replica term has been changed during mapping ["
+ + "part=" + partId
+ + ", leader=" + nodeWithTerm.name()
+ + ", expectedTerm=" + nodeWithTerm.term()
+ + ", actualTerm=" + otherNodeWithTerm.term() +
']');
+ }
+
+ intersection.add(otherNodeWithTerm);
+ }
+ }
+
+ return intersection;
+ }
+
+ private List<NodeWithTerm> filter(List<NodeWithTerm> assignment,
Set<String> filter) {
+ List<NodeWithTerm> res = new ArrayList<>();
+
Review Comment:
let's do check before creating `res`.
Also please pass size for `res`
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