[jira] [Created] (SOLR-12944) Bugs around createNodeSet=EMPTY

["Varun Thacker (JIRA)" <ji...@apache.org>]

Varun Thacker created SOLR-12944:
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             Summary: Bugs around createNodeSet=EMPTY 
                 Key: SOLR-12944
                 URL: https://issues.apache.org/jira/browse/SOLR-12944
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Varun Thacker


Firstly, As of today we cannot create an empty collection from SolrJ

I have a two node cluster and this API call fails with an error
{code:java}
    //Create a coreless collection of 3 shards
    CollectionAdminRequest.Create create = CollectionAdminRequest
        .createCollection("test_collection", "conf1", 3,   0)
        .setCreateNodeSet(OverseerCollectionMessageHandler.CREATE_NODE_SET_EMPTY)
        .setMaxShardsPerNode(-1);{code}


Secondly if I use the API directly , {{[http://localhost:8983/solr/admin/collections?action=create&name=test_coll&numShards=5&createNodeSet=EMPTY] }}the state.json has replicationFactor = nrtReplicas = 1 instead of 0


{code:java}
"test_coll":{
    "pullReplicas":"0",
    "replicationFactor":"1",
    "router":{"name":"compositeId"},
    "maxShardsPerNode":"1",
    "autoAddReplicas":"false",
    "nrtReplicas":"1",
    "tlogReplicas":"0",
    "shards":{
      "shard1":{
        "range":"80000000-b332ffff",
        "state":"active",
        "replicas":{}},
      "shard2":{{code}

On a side note , I think we should rethink how replicationFactor/nrtReplicas/tlogReplicas/pullReplicas are stored.
These values could be stored at a per shard level such that adding a replica will actually refelct the total replication count



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