[SOLR-8609] When there are multiple nodes oIn a host, snitch‘s rule override parameter 'maxShardsPerNode'

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 5.2, 5.3, 5.3.1, 5.4, 5.4.1
• Component/s: Rules
• Assignee: Unassigned
• Reporter: davidchiu
• Created: 28/Jan/16 04:56
• Updated: 28/Jan/16 04:56

Description

I have 3 hosts, deployed 5 solr nodes(instances) in per hosts, so there are 5*3=15 nodes in my environment.
I created collection with snitch rule(Don’t assign more than 1 replica of a collection's shard to a host.).
At last, I got following information:

The create command like this:
curl --negotiate -v "http://node01:8983/solr/admin/collections?action=CREATE&name=test1&collection.configName=SchemaTest1&numShards=15&replicationFactor=3&wt=json&indent=true&maxShardsPerNode=3&rule=host:,shard:,replica:1"

There are 4 shards on a node as follwong information, but the maxShardsPerNode is 3.
drwx------ 2 root root 4096 Jan 28 19:48 test1_shard10_replica2
drwx------ 2 root root 4096 Jan 28 19:48 test1_shard11_replica1
drwx------ 2 root root 4096 Jan 28 19:48 test1_shard12_replica3
drwx------ 2 root root 4096 Jan 28 19:48 test1_shard14_replica3

and there are 1 or 2 shards on some other nodes. such as:
drwx------ 2 root root 4096 Jan 28 19:48 test1_shard17_replica2
drwx------ 2 root root 4096 Jan 28 19:48 test1_shard9_replica1

As if the snitch rule override the paramter maxShardsPerNode;
When I remove the rule, there are 3 shards on per node in balance.

In fact, I want that there are 3 shard on per node in balance, and very shard's replica on other host. How can I get it?