[jira] [Created] (SOLR-11807) Restore collection should treat maxShardsPerNode=-1 as unlimited like create collection

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

Varun Thacker created SOLR-11807:
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             Summary: Restore collection should treat maxShardsPerNode=-1 as unlimited like create collection
                 Key: SOLR-11807
                 URL: https://issues.apache.org/jira/browse/SOLR-11807
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Varun Thacker


Today we can never restore the cloud example gettingstarted collection because it sets maxShardsPerNode=-1 . We have special handling for -1 in CreateCollectionCmd but not in RestoreCmd.

Today RestoreCmd does has this check and it fails to restore the collection

{code}
    if ((numShards * totalReplicasPerShard) > (availableNodeCount * maxShardsPerNode)) {
      throw new SolrException(ErrorCode.BAD_REQUEST,
          String.format(Locale.ROOT, "Solr cloud with available number of nodes:%d is insufficient for"
              + " restoring a collection with %d shards, total replicas per shard %d and maxShardsPerNode %d."
              + " Consider increasing maxShardsPerNode value OR number of available nodes.",
              availableNodeCount, numShards, totalReplicasPerShard, maxShardsPerNode));
    }
{code}

Steps to reproduce:

Steps to reproduce:

1. ./bin/solr start -e cloud -noprompt : This creates a 2 node cluster and a gettingstarted collection which 2X2
2. Added 4 docs (id=1,2,3,4) with commit=true and openSearcher=true (default)
3. Call backup: http://localhost:8983/solr/admin/collections?action=BACKUP&name=gettingstarted_backup&collection=gettingstarted&location=/Users/varunthacker/solr-7.1.0
4. Call restore:
http://localhost:8983/solr/admin/collections?action=restore&name=gettingstarted_backup&collection=restore_gettingstarted&location=/Users/varunthacker/solr-7.1.0



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