Sounds like a bug. Can you please open a Jira issue? On Thu, Jan 4, 2018 at 8:37 PM, Ansgar Wiechers <solr-u...@planetcobalt.net> wrote: > Hi all. > > I'm running Solr 7.1 in SolrCloud mode ona a 3-node cluster and tried > using the backup/restore API for the first time. Backup worked fine, but > when trying to restore the backed-up collection I ran into an unexpected > problem with the replication factor setting. > > Below command attempts to restore a backup of the collection "demo" with > 3 shards, creating 2 replicas per shard: > > # curl -s -k > 'https://localhost:8983/solr/admin/collections?action=restore&name=demo&location=/srv/backup/solr/solr-dev&collection=demo&maxShardsPerNode=2&replicationFactor=2' > { > "error": { > "code": 400, > "msg": "Solr cloud with available number of nodes:3 is insufficient for > restoring a collection with 3 shards, total replicas per shard 6 and > maxShardsPerNode 2. Consider increasing maxShardsPerNode value OR number of > available nodes.", > "metadata": [ > "error-class", > "org.apache.solr.common.SolrException", > "root-error-class", > "org.apache.solr.common.SolrException" > ] > }, > "exception": { > "rspCode": 400, > "msg": "Solr cloud with available number of nodes:3 is insufficient for > restoring a collection with 3 shards, total replicas per shard 6 and > maxShardsPerNode 2. Consider increasing maxShardsPerNode value OR number of > available nodes." > }, > "Operation restore caused exception:": > "org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: > Solr cloud with available number of nodes:3 is insufficient for restoring a > collection with 3 shards, total replicas per shard 6 and maxShardsPerNode 2. > Consider increasing maxShardsPerNode value OR number of available nodes.", > "responseHeader": { > "QTime": 28, > "status": 400 > } > } > > It looks to me like the restore API multiplies the replication factor > with the number of nodes, which is not how the replication factor > behaves in other contexts. The documentation[1] also didn't lead me to > expect this behavior: > >> replicationFactor >> >> The number of replicas to be created for each shard. > > Is this expected behavior (by anyone but me)? > Should I report it as a bug? > > [1]: https://lucene.apache.org/solr/guide/7_1/collections-api.html > > Regards > Ansgar Wiechers > -- > "Abstractions save us time working, but they don't save us time learning." > --Joel Spolsky
-- Regards, Shalin Shekhar Mangar.
