pvcnt commented on code in PR #2039:
URL: https://github.com/apache/solr/pull/2039#discussion_r1412177582
##########
solr/core/src/java/org/apache/solr/cloud/api/collections/CreateCollectionCmd.java:
##########
@@ -590,12 +589,22 @@ public static List<String> populateShardNames(ZkNodeProps
message, String router
return shardNames;
}
- private static ReplicaCount getNumReplicas(ZkNodeProps message) {
- int numTlogReplicas = message.getInt(TLOG_REPLICAS, 0);
- int numNrtReplicas =
- message.getInt(
- NRT_REPLICAS, message.getInt(REPLICATION_FACTOR, numTlogReplicas >
0 ? 0 : 1));
- return new ReplicaCount(numNrtReplicas, numTlogReplicas,
message.getInt(PULL_REPLICAS, 0));
+ private ReplicaCount getNumReplicas(ZkNodeProps message) {
+ ReplicaCount numReplicas = ReplicaCount.fromMessage(message);
+ int numLeaderEligibleReplicas =
numReplicas.count(leaderEligibleReplicaTypes);
+ if (numLeaderEligibleReplicas == 0 &&
!numReplicas.contains(Replica.Type.defaultType())) {
+ // Ensure that there is at least one replica that can become leader if
the user did
+ // not force a replica count.
+ numReplicas.put(Replica.Type.defaultType(), 1);
+ } else if (numLeaderEligibleReplicas == 0) {
+ // This can still fail if the user manually forced "0" replica counts.
Review Comment:
It may be a bug (what is the purpose of validating the number of replicas if
not creating any replicas?), but the goal of this PR is not to change this
behaviour.
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