Re: File system choices?

2016-12-15 Thread Walter Underwood 
About ten years ago, I accidentally put indexes on an NFS volume. Solr ran 
about 100X slower, so I haven’t tried it since.

wunder
Walter Underwood
wun...@wunderwood.org
http://observer.wunderwood.org/  (my blog)


> On Dec 15, 2016, at 8:17 AM, Michael Kuhlmann  wrote:
> 
> Yes, and we're doing such things at my company. However we most often do
> things you shouldn't do; this is one of these.
> 
> Solr needs to load data quite fast, otherwise you'll be having a
> performance killer. It's often recommended to use an SSD instead of a
> normal hard disk; a network share would be quite contrary to it.
> 
> It might make sense when you update very seldom, and all your index fits
> into memory.
> 
> -Michael
> 
> 
> Am 15.12.2016 um 16:37 schrieb Michael Joyner (NewsRx):
>> Hello all,
>> 
>> Can the Solr indexes be safely stored and used via mounted NFS shares?
>> 
>> -Mike
>> 
>

Re: File system choices?

2016-12-15 Thread Erick Erickson 
NFS isn't the first choice. That said, numbers of organizations _doou
have to manally remove _ use NFS for their Lucene indexes. See the
recommendations here:
https://lucene.apache.org/core/5_4_0/core/org/apache/lucene/store/NativeFSLockFactory.html

What it really amounts to is that you may find yourself in situations
where you have to manually clean up lock fines if Solr exits
abnormally, so don't 'kill -9'. And follow the advice above for
configuring your lock factory in solrcofnig.xml

Best,
Erick

On Thu, Dec 15, 2016 at 7:37 AM, Michael Joyner (NewsRx)
 wrote:
> Hello all,
>
> Can the Solr indexes be safely stored and used via mounted NFS shares?
>
> -Mike
>

Re: File system choices?

2016-12-15 Thread Michael Kuhlmann 
Yes, and we're doing such things at my company. However we most often do
things you shouldn't do; this is one of these.

Solr needs to load data quite fast, otherwise you'll be having a
performance killer. It's often recommended to use an SSD instead of a
normal hard disk; a network share would be quite contrary to it.

It might make sense when you update very seldom, and all your index fits
into memory.

-Michael


Am 15.12.2016 um 16:37 schrieb Michael Joyner (NewsRx):
> Hello all,
>
> Can the Solr indexes be safely stored and used via mounted NFS shares?
>
> -Mike
>

File system choices?

2016-12-15 Thread Michael Joyner (NewsRx) 

Hello all,

Can the Solr indexes be safely stored and used via mounted NFS shares?

-Mike