dsmiley commented on a change in pull request #17:
URL: https://github.com/apache/solr/pull/17#discussion_r655555107



##########
File path: 
solr/core/src/java/org/apache/solr/cloud/api/collections/CreateCollectionCmd.java
##########
@@ -560,10 +559,16 @@ public static void 
createCollectionZkNode(DistribStateManager stateManager, Stri
           }
 
           collectionProps.remove(ZkStateReader.NUM_SHARDS_PROP);  // we don't 
put numShards in the collections properties
+          collectionProps.remove(ZkStateReader.CONFIGNAME_PROP); // we don't 
write configName on a zk collection node
 
-          ZkNodeProps zkProps = new ZkNodeProps(collectionProps);
-          stateManager.makePath(collectionPath, Utils.toJSON(zkProps), 
CreateMode.PERSISTENT, false);
-
+          if (collectionProps.size() > 0) {
+            ZkNodeProps zkProps = new ZkNodeProps(collectionProps);
+            // create a node with collectionProps data
+            stateManager.makePath(collectionPath, Utils.toJSON(zkProps), 
CreateMode.PERSISTENT, false);

Review comment:
       Great; lets then not write props since there's nothing there.

##########
File path: 
solr/core/src/java/org/apache/solr/cloud/api/collections/CreateCollectionCmd.java
##########
@@ -368,6 +368,7 @@ public void call(ClusterState clusterState, ZkNodeProps 
message, @SuppressWarnin
       } else {
         log.debug("Finished create command on all shards for collection: {}", 
collectionName);
         // Emit a warning about production use of data driven functionality
+        // AutoGeneratedConfigset is always clone of _default configset

Review comment:
       ```suggestion
           // Note: isAutoGeneratedConfigSet is always a clone of the _default 
configset
   ```




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