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From Rick Leir <>
Subject Re: (ANNOUNCEMENT) Solr Examples reading group
Date Fri, 07 Oct 2016 16:50:11 GMT
Thanks for using the word bewildering, I agree.

While we are talking of simplifying solrconfig.xml, may I mention YAML? 
I find the YAML format so much more readable than XML.

I have not looked at the code which reads the config, so I do not know 
how big a change it is to use cfg4j and read in YAML.

Perhaps I should ask this on the dev list. And I hope I am not 
revisiting a discussion which has already been decided.

cheers -- Rick

On 2016-10-05 10:15 AM, Erick Erickson wrote:
> Charlie:
> I like that idea. It's bewildering how much stuff is in the config. I
> do think there's value in having it all there though since people
> won't even know to look in, say, "kitchen-sink-solrconfig.xml" for all
> the _other_ things that can be done....
> Perhaps comment out all the "extra stuff" and move it to the end of
> the config files?
> And how many people have been tripped up by un-defining the "text"
> field in the schema and still having things break by the "df" field
> being set to text in solrconfig.xml?
> Erick
> On Wed, Oct 5, 2016 at 1:29 AM, Charlie Hull <> wrote:
>> On 05/10/2016 02:19, Walter Underwood wrote:
>>> I’m trying to bring up 6.2.1 after experience with 1.2 through 5.5, and it
>>> is a mess.
>>> I’ve done solid good practice (Zookeeper ensemble, chroot, data on EBS
>>> volume),
>>> but I’m stuck with a completely non-instructive stack trace.
>>> We run a separate data directory and SOLR_HOME, which is poorly supported
>>> by
>>> the startup script. I gave up and used a symlink to make it sorta happy.
>>> Still, I’m stuck with this.
>>> org.apache.solr.common.SolrException: Error processing the request.
>>> CoreContainer is either not initialized or shutting down.
>>>          at
>>> org.apache.solr.servlet.SolrDispatchFilter.doFilter(
>>>          at
>>> org.apache.solr.servlet.SolrDispatchFilter.doFilter(
>>> I’ve tried loading configs with bin/solr and with I get useless
>>> error messages
>>> from each of them.
>>> I worked on a commercial search product for ten years, and this wouldn’t
>>> pass basic QA.
>>> We need to do some work, people.
>> Last week I had to upgrade a proof-of-concept demo that ran on Solr 4 to
>> 6.2.1, using the Sunburnt client. I thought I'd use the Files example to get
>> started. This wasn't exactly painless: I ended up having to disable Managed
>> Schemas (I couldn't get Solr to use the old schema.xml), mess around with
>> Sunburnt (which assumed a certain URL structure to read schema.xml) and
>> generally chop large chunks out solrconfig.xml until it began to work.
>> When we see clients with Solr issues the problems often stem from there
>> being *too much* in their configuration - they've started with one of the
>> example configs and added often conflicting settings, there's all kinds of
>> irrelevant stuff hanging around (you probably don't need a Hungarian stemmer
>> unless you're Hungarian), a zillion schema types you'll never need...I'm
>> beginning to wonder if an absolutely minimal Solr example configuration
>> might be a good idea. It's going to have to make assumptions (e.g. it's
>> probably going to assume English content) and it won't do anything
>> particularly clever, but I feel it might be a better place to start than
>> wondering what on earth all that commented-out XML does, especially the bits
>> that say 'you probably shouldn't use this in production'. You can always
>> copy those bits back in later...
>> I'll be in Boston next week if anyone wants to chat about this. Maybe I'll
>> have a go at our Lucene Hackday on Tuesday (still some places free!)
>> Cheers
>> Charlie
>>> wunder
>>> Walter Underwood
>>>  (my blog)
>>>> On Oct 4, 2016, at 5:59 PM, Alexandre Rafalovitch <>
>>>> wrote:
>>>> Hello,
>>>> Three weeks ago I asked this list whether there was an interest in
>>>> running a virtual examples reading group, with "all questions
>>>> welcome". The response was sufficient to start planning the first
>>>> study group.
>>>> The current projected date is start of November. You can register for
>>>> it at: (it is the same survey
>>>> as the first time - no need to do that again if you responded before).
>>>> The first run is free.
>>>> Regards,
>>>>     Alex.
>>>> P.s. If you have Solr-using customers (e.g. you are running a Solr
>>>> cloud business), feel free to announce this to them and/or run your
>>>> own outreach and contact me directly with bulk emails of those
>>>> interested.
>>>> P.p.s. I am also presenting on Solr examples at the Lucene/Solr
>>>> Revolution in about a week. If you have very strong opinions about
>>>> Solr examples, feel free to reach out directly and share them via
>>>> email or in person. The opinions do not have to be positive, though
>>>> having them constructive would be an nice. :-)
>>>> ----
>>>> Newsletter and resources for Solr beginners and intermediates:
>> --
>> Charlie Hull
>> Flax - Open Source Enterprise Search
>> tel/fax: +44 (0)8700 118334
>> mobile:  +44 (0)7767 825828
>> web:

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