SolrCloud use of "min_rf" through SolrJ

[Zisis Tachtsidis <zi...@runbox.com>]

Hi all,

I'm trying to make use of the "min_rf" (minimum replication factor) feature
described in https://issues.apache.org/jira/browse/SOLR-5468. According to
the ticket, all that is needed is to pass "min_rf" param into the update
request and get back the "rf" param from the response or even easier make
use of CloudSolrServer.getMinAchievedReplicationFactor().

I'm using SolrJ's CloudSolrServer but I couldn't find any way to pass
"min_rf" using the available add() methods when sending a document to Solr,
so I resorted to the following

UpdateRequest req = new UpdateRequest();
req.setParam(UpdateRequest.MIN_REPFACT, "1");
req.add(doc);
UpdateResponse response = req.process(cloudSolrServer);
int rf = cloudSolrServer.getMinAchievedReplicationFactor("collection_name",
response.getResponse());

Still the returned "rf" value is always -1. How can I utilize "min_rf"
through SolrJ?
I'm using Solr 4.10.0 with a collection that has 2 replicas (one leader, one
replica).

Thanks



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Re: SolrCloud use of "min_rf" through SolrJ

[Zisis Tachtsidis <zi...@runbox.com>]

In case anyone else runs into this, I've managed to make it work. I didn't
notice in the ticket discussion that the specific feature is enabled when
min_rf >=2, I was setting min_rf=1. It goes without saying that you should
also have at least 2 replicas in your SolrCloud configuration. The actual
code I've used to make it return "rf" is

UpdateRequest req = new UpdateRequest();
req.setParam(UpdateRequest.MIN_REPFACT, "2");
req.add(doc);
NamedList response = solrServer.request(req);





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