shalinmangar commented on a change in pull request #1417: SOLR-12847:
Auto-create a policy rule that corresponds to maxShardsPerNode
URL: https://github.com/apache/lucene-solr/pull/1417#discussion_r406736277
##########
File path:
solr/core/src/java/org/apache/solr/cloud/api/collections/CreateCollectionCmd.java
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@@ -407,14 +466,81 @@ public void call(ClusterState clusterState, ZkNodeProps
message, NamedList resul
.assignPullReplicas(numPullReplicas)
.onNodes(nodeList)
.build();
- Assign.AssignStrategyFactory assignStrategyFactory = new
Assign.AssignStrategyFactory(cloudManager);
+ // if Strategy.POLICY is in use AND maxShardsPerNode was specified then
for back-compat it needs to
+ // be translated into a rule (see SOLR-12847).
+ // Modify the autoscaling rules as needed BEFORE actually calling
assign, setting configToRestore as
+ // a side-effect to restore the original config if the creation fails
+ if ((strategy == Assign.AssignStrategyFactory.Strategy.POLICY) &&
+ (maxReplicasPerNode != null && maxReplicasPerNode !=
Integer.MAX_VALUE)) {
+ maybeAddMaxReplicasRule(cloudManager, maxReplicasPerNode,
docCollection, configToRestore);
Review comment:
I would have preferred to do this outside of this method instead of adding a
side effect here. That way the addition of the clause as well as its cleanup
can be in one place.
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