Hi, Thanks for the data. I see the problem now - it’s a bug in the simulator. I filed a Jira issue to track and fix it: SOLR-14122.
> On 16 Dec 2019, at 19:13, Cao, Li <li_...@comcast.com> wrote: > >> I am using solr 8.3.0 in cloud mode. I have collection level autoscaling >> policy and the collection name is “entity”. But when I run autoscaling >> simulation all the steps failed with this message: >> >> "error":{ >> "exception":"java.io.IOException: >> java.util.concurrent.ExecutionException: >> org.apache.solr.common.SolrException: org.apache.solr.common.SolrException: >> Could not find collection : entity/shards", >> "suggestion":{ >> "type":"repair", >> "operation":{ >> "method":"POST", >> "path":"/c/entity/shards", >> "command":{"add-replica":{ >> "shard":"shard2", >> "node":"my_node:8983_solr", >> "type":"TLOG"}}}}, >> "replicaInfo":null}}},