How Can Leader Listed As Replication (Slave) instead of Master

[Furkan KAMACI <fu...@gmail.com>]

I use Solr 4.2.1 at SolrCloud. When I look at graph at cloud link of admin
page, I see that one of my node is listed as Leader. However when I
click core selector and clik my core there writes: Replication (Slave). It
is leader but a slave instead of being master. Do I miss anything? Can we
use Master-Slave terms for SolrCloud?

Re: How Can Leader Listed As Replication (Slave) instead of Master

[Jack Krupansky <ja...@basetechnology.com>]

Is this a UI issue, where the UI isn't quite sure or aware or is confused 
about traditional master/slave mode and SolrCloud mode?

-- Jack Krupansky

-----Original Message----- 
From: Shawn Heisey
Sent: Tuesday, May 14, 2013 1:26 PM
To: solr-user@lucene.apache.org
Subject: Re: How Can Leader Listed As Replication (Slave) instead of Master

On 5/14/2013 8:41 AM, Furkan KAMACI wrote:
> I use Solr 4.2.1 at SolrCloud. When I look at graph at cloud link of admin
> page, I see that one of my node is listed as Leader. However when I
> click core selector and clik my core there writes: Replication (Slave). It
> is leader but a slave instead of being master. Do I miss anything? Can we
> use Master-Slave terms for SolrCloud?

You've been told several times now that master and slave designations
have no real meaning in SolrCloud.

SolrCloud does use replication, but whether a given replica is master or
slave is fluid.  I'm pretty sure that the designation is changed to
whatever is required just before a replication begins, and left alone
other than that.  Looking at the state of the replication handler won't
tell you anything except what happened the last time that replication
was used.

Thanks,
Shawn 

Re: How Can Leader Listed As Replication (Slave) instead of Master

[Shawn Heisey <so...@elyograg.org>]

On 5/14/2013 8:41 AM, Furkan KAMACI wrote:
> I use Solr 4.2.1 at SolrCloud. When I look at graph at cloud link of admin
> page, I see that one of my node is listed as Leader. However when I
> click core selector and clik my core there writes: Replication (Slave). It
> is leader but a slave instead of being master. Do I miss anything? Can we
> use Master-Slave terms for SolrCloud?

You've been told several times now that master and slave designations
have no real meaning in SolrCloud.

SolrCloud does use replication, but whether a given replica is master or
slave is fluid.  I'm pretty sure that the designation is changed to
whatever is required just before a replication begins, and left alone
other than that.  Looking at the state of the replication handler won't
tell you anything except what happened the last time that replication
was used.

Thanks,
Shawn