Hi Chuck,
I was chatting with Noble offline and he suggested we could use this
starting 7.5
{replica:'#EQUAL', shard : ''#EACH' , sysprop.az :'#EACH'}
where "az" is a sysprop while starting each solr instance ( -Daz=us-east-1 )
It's documented
https://lucene.apache.org/solr/guide/7_5/solrcloud-autoscaling-policy-preferences.html
Let me know if this works for you.
( Looks like my previous email had some formatting issues )
On Mon, Oct 1, 2018 at 10:17 PM Varun Thacker <va...@vthacker.in> wrote:
> Hi Chuck,
>
> I was chatting with Noble offline and he suggested we could use this
> starting 7.5
>
> *{replica:'#EQUAL', shard : ''#EACH' , sysprop.az <http://sysprop.az>
> :'#EACH'}*
>
> where "az" is a sysprop while starting each solr instance ( -Daz=us-east-1
> )
>
> It's documented
> https://lucene.apache.org/solr/guide/7_5/solrcloud-autoscaling-policy-preferences.html
>
> Let me know if this works for you.
>
>
> On Wed, Sep 26, 2018 at 9:11 AM Chuck Reynolds <creyno...@ancestry.com>
> wrote:
>
>> Noble,
>>
>> Are you saying in the latest version of Solr that this would work with
>> three instances of Solr running on each server?
>>
>> If so how?
>>
>> Thanks again for your help.
>>
>> On 9/26/18, 9:11 AM, "Noble Paul" <noble.p...@gmail.com> wrote:
>>
>> I'm not sure if it is pertinent to ask you to move to the latest Solr
>> which has the policy based replica placement. Unfortunately, I don't
>> have any other solution I can think of
>>
>> On Wed, Sep 26, 2018 at 11:46 PM Chuck Reynolds <
>> creyno...@ancestry.com> wrote:
>> >
>> > Noble,
>> >
>> > So other than manually moving replicas of shard do you have a
>> suggestion of how one might accomplish the multiple availability zone with
>> multiple instances of Solr running on each server?
>> >
>> > Thanks
>> >
>> > On 9/26/18, 12:56 AM, "Noble Paul" <noble.p...@gmail.com> wrote:
>> >
>> > The rules suggested by Steve is correct. I tested it locally
>> and I got
>> > the same errors. That means a bug exists probably.
>> > All the new development efforts are invested in the new policy
>> feature
>> > .
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__lucene.apache.org_solr_guide_7-5F4_solrcloud-2Dautoscaling-2Dpolicy-2Dpreferences.html&d=DwIFaQ&c=kKqjBR9KKWaWpMhASkPbOg&r=J-2s3b-3-OTA0o6bGDhJXAQlB5Y3s4rOUxlh_78DJl0&m=yXVYNcm-dqN_lucLyuQI38EZfK4f8l4828Ty53e4plM&s=D1vfu3bOu_hOGAU2CIKPwqBTPkYiBeK1kOUoFnQZpKA&e=
>> >
>> > The old one is going to be deprecated pretty soon. So, I'm not
>> sure if
>> > we should be investing our resources here
>> > On Wed, Sep 26, 2018 at 1:23 PM Chuck Reynolds <
>> creyno...@ancestry.com> wrote:
>> > >
>> > > Shawn,
>> > >
>> > > Thanks for the info. We’ve been running this way for the past
>> 4 years.
>> > >
>> > > We were running on very large hardware, 20 physical cores
>> with 256 gigs of ram with 3 billion document and it was the only way we
>> could take advantage of the hardware.
>> > >
>> > > Running 1 Solr instance per server never gave us the
>> throughput we needed.
>> > >
>> > > So I somewhat disagree with your statement because our test
>> proved otherwise.
>> > >
>> > > Thanks for the info.
>> > >
>> > > Sent from my iPhone
>> > >
>> > > > On Sep 25, 2018, at 4:19 PM, Shawn Heisey <
>> apa...@elyograg.org> wrote:
>> > > >
>> > > >> On 9/25/2018 9:21 AM, Chuck Reynolds wrote:
>> > > >> Each server has three instances of Solr running on it so
>> every instance on the server has to be in the same replica set.
>> > > >
>> > > > You should be running exactly one Solr instance per
>> server. When evaluating rules for replica placement, SolrCloud will treat
>> each instance as completely separate from all others, including others on
>> the same machine. It will not know that those three instances are on the
>> same machine. One Solr instance can handle MANY indexes.
>> > > >
>> > > > There is only ONE situation where it makes sense to run
>> multiple instances per machine, and in my strong opinion, even that
>> situation should not be handled with multiple instances. That situation is
>> this: When running one instance would require a REALLY large heap.
>> Garbage collection pauses can become extreme in that situation, so some
>> people will run multiple instances that each have a smaller heap, and
>> divide their indexes between them. In my opinion, when you have enough
>> index data on an instance that it requires a huge heap, instead of running
>> two or more instances on one server, it's time to add more servers.
>> > > >
>> > > > Thanks,
>> > > > Shawn
>> > > >
>> >
>> >
>> >
>> > --
>> > -----------------------------------------------------
>> > Noble Paul
>> >
>> >
>>
>>
>> --
>> -----------------------------------------------------
>> Noble Paul
>>
>>
>>
