I've noticed an issue with the Solr 6.5.1 Collections API BACKUP async command returning early. The state is finished well before one shard is finished.
The collection I'm backing up has 12 shards across 6 nodes and I suspect the issue is that it is not waiting for all backups on the node to finish. Alternatively, I if I change the request to not be async it works OK but sometimes I get the exception "backup the collection time out:180s". Has anyone seen this, or knows a workaround? Cheers, Damien.
