For 99.9%, run three copies behind a load balancer. That allows you to
take one down for upgrade, and still be fault-tolerant.
wunder
On Aug 3, 2009, at 10:46 AM, Robert Petersen wrote:
So then would the 'right' thing to do be to run it under something
like
Daemontools so it bounces back up on a crash? Do any other people use
this approach or is there something better to make it come back up?
Speaking of overly large caches, if I have solr running on a machine
with 8GB main memory is it going to hurt to make some huge cache
sizes?
Are these settings reasonable? With a small index I have been getting
some great hit-rates.
<ramBufferSizeMB>1024</ramBufferSizeMB>
<filterCache class="solr.FastLRUCache" size="350000"
initialSize="512" autowarmCount="80"/>
<queryResultCache class="solr.LRUCache" size="512000000"
initialSize="512" autowarmCount="80"/>
<documentCache class="solr.FastLRUCache" size="512000"
initialSize="512" autowarmCount="0"/>
Thanks
Robi
-----Original Message-----
From: Otis Gospodnetic [mailto:otis_gospodne...@yahoo.com]
Sent: Friday, July 31, 2009 11:37 PM
To: solr-user@lucene.apache.org
Subject: Re: 99.9% uptime requirement
Robi,
Solr is indeed very stable. However, it can crash and I've seen it
crash. Or rather, I should say I've seen the JVM that runs Solr
crash.
For instance, if you have a servlet container with a number of
webapps,
one of which is Solr, and one of which has a memory leak, I believe
all
webapps will suffer and "crash". And even if you have just Solr in
your
servlet container, it can OOM, say if you specify overly large
caches or
too frequent commits, etc.
Otis
--
Sematext is hiring -- http://sematext.com/about/jobs.html?mls
Lucene, Solr, Nutch, Katta, Hadoop, HBase, UIMA, NLP, NER, IR
----- Original Message ----
From: Robert Petersen <rober...@buy.com>
To: solr-user@lucene.apache.org
Sent: Friday, July 31, 2009 12:18:55 PM
Subject: 99.9% uptime requirement
Hi all,
My solr project powers almost all the pages in our site and so needs
to
be up period. My question is what can I do to ensure that happens?
Does solr ever crash, assuming reasonable load conditions and no
extreme
index sizes?
I saw some comments about running solr under daemontools in order to
get
an auto-restart on crashes. From what I have seen so far in my
limited
experience, solr is very stable and never crashes (so far). Does
anyone
else have this requirement and if so how do they deal with it? Is
anyone else running solr under daemontools in a production site?
Thanks for any input you might have,
Robi
