Major Description
If I create a collection with autoAddReplicas=true in Solr 7.x a AutoAddReplicasPlanAction get's created with a waitFor=30 seconds
The default should be increased as a JVM which is down for more than 30seconds can cause the framework to add a new replica on another node
With HDFS this was a cheap operation as it only involved create a core and pointing it to the same index directory.
But for non shared file systems, this is a very expensive operation and can potentially move large indexes around so maybe we should have a higher default