Limit to the number of cores supported?

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Limit to the number of cores supported?

Pouliot, Scott
Hey guys.

We're running SOLR 6.2.0 in a master/slave configuration and I was wondering if there is a limit to the number of cores this setup can support? We're having random issue where a core or 2 will stop responding to POSTS (GETS work fine) until we restart SOLR.

We've currently got 140+ cores on this setup and wondering if that could be part of the problem?

Anyone ever run into this before?

Scott
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Re: Limit to the number of cores supported?

Erick Erickson
I know of thousands of cores on a single Solr instance. Operationally
there's not problem there, although there may be some practical issues
(i.e. startup time and the like).

What does your Solr log show? Two popular issues:
OutOfMemory issues
Not enough file handles (fix with ulimit)

 But without more specific info about what Solr reports in the log
it's impossible to say much.

Best,
Erick

On Mon, Jul 17, 2017 at 10:41 AM, Pouliot, Scott
<[hidden email]> wrote:
> Hey guys.
>
> We're running SOLR 6.2.0 in a master/slave configuration and I was wondering if there is a limit to the number of cores this setup can support? We're having random issue where a core or 2 will stop responding to POSTS (GETS work fine) until we restart SOLR.
>
> We've currently got 140+ cores on this setup and wondering if that could be part of the problem?
>
> Anyone ever run into this before?
>
> Scott
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Re: Limit to the number of cores supported?

Pouliot, Scott
It doesn't seem to report anything at all, which is part of the problem.   No error for me to track down as of yet....

Get Outlook for iOS<https://aka.ms/o0ukef>
________________________________
From: Erick Erickson <[hidden email]>
Sent: Monday, July 17, 2017 3:23:24 PM
To: solr-user
Subject: Re: Limit to the number of cores supported?

I know of thousands of cores on a single Solr instance. Operationally
there's not problem there, although there may be some practical issues
(i.e. startup time and the like).

What does your Solr log show? Two popular issues:
OutOfMemory issues
Not enough file handles (fix with ulimit)

 But without more specific info about what Solr reports in the log
it's impossible to say much.

Best,
Erick

On Mon, Jul 17, 2017 at 10:41 AM, Pouliot, Scott
<[hidden email]> wrote:
> Hey guys.
>
> We're running SOLR 6.2.0 in a master/slave configuration and I was wondering if there is a limit to the number of cores this setup can support? We're having random issue where a core or 2 will stop responding to POSTS (GETS work fine) until we restart SOLR.
>
> We've currently got 140+ cores on this setup and wondering if that could be part of the problem?
>
> Anyone ever run into this before?
>
> Scott
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