praveenc7 commented on code in PR #13952:
URL: https://github.com/apache/pinot/pull/13952#discussion_r1752980163
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pinot-broker/src/main/java/org/apache/pinot/broker/routing/instanceselector/ReplicaGroupInstanceSelector.java:
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@@ -152,21 +155,28 @@ private Pair<Map<String, String>, Map<String, String>>
selectServersUsingAdaptiv
SegmentInstanceCandidate selectedInstance = candidates.get(instanceIdx);
// Adaptive Server Selection
// TODO: Support numReplicaGroupsToQuery with Adaptive Server Selection.
- if (!serverRankList.isEmpty()) {
- int minIdx = Integer.MAX_VALUE;
+ if (!serverRankMap.isEmpty()) {
+ int bestRank = Integer.MAX_VALUE;
for (SegmentInstanceCandidate candidate : candidates) {
- int idx = serverRankList.indexOf(candidate.getInstance());
- if (idx == -1) {
+ Integer rank = serverRankMap.get(candidate.getInstance());
+ if (rank == null) {
// Let's use the round-robin approach until stats for all servers
are populated.
selectedInstance = candidates.get(instanceIdx);
break;
}
- if (idx < minIdx) {
- minIdx = idx;
+ // Update the candidate if the current one has a better rank
+ if (rank < bestRank) {
+ bestRank = rank;
selectedInstance = candidate;
}
}
}
+
+ if (selectedServers.contains(selectedInstance.getInstance())) {
Review Comment:
Since we have to loop through each server in a segment to see if it is
unranked. Having a set may not help here, removing it
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