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From Lance Norskog <>
Subject Re: SOLR Prevent solr of modifying fields when update doc
Date Sat, 24 Aug 2013 02:08:43 GMT
Solr does not by default generate unique IDs. It uses what you give as 
your unique field, usually called 'id'.

What software do you use to index data from your RSS feeds? Maybe that 
is creating a new 'id' field?

There is no partial update, Solr (Lucene) always rewrites the complete 

On 08/23/2013 09:03 AM, Greg Preston wrote:
> Perhaps an atomic update that only changes the fields you want to change?
> -Greg
> On Fri, Aug 23, 2013 at 4:16 AM, Luís Portela Afonso
> <> wrote:
>> Hi thanks by the answer, but the uniqueId is generated by me. But when solr indexes
and there is an update in a doc, it deletes the doc and creates a new one, so it generates
a new UUID.
>> It is not suitable for me, because i want that solr just updates some fields, because
the UUID is the key that i use to map it to an user in my database.
>> Right now i'm using information that comes from the source and never chages, as my
uniqueId, like for example the guid, that exists in some rss feeds, or if it doesn't exists
i use link.
>> I think there is any simple solution for me, because for what i have read, when an
update to a doc exists, SOLR deletes the old one and create a new one, right?
>> On Aug 23, 2013, at 12:07 PM, Erick Erickson <> wrote:
>>> Well, not much in the way of help because you can't do what you
>>> want AFAIK. I don't think UUID is suitable for your use-case. Why not
>>> use your <uniqueId>?
>>> Or generate something yourself...
>>> Best
>>> Erick
>>> On Thu, Aug 22, 2013 at 5:56 PM, Luís Portela Afonso <
>>>> wrote:
>>>> Hi,
>>>> How can i prevent solr from update some fields when updating a doc?
>>>> The problem is, i have an uuid with the field name uuid, but it is not an
>>>> unique key. When a rss source updates a feed, solr will update the doc with
>>>> the same link but it generates a new uuid. This is not the desired because
>>>> this id is used by me to relate feeds with an user.
>>>> Can someone help me?
>>>> Many Thanks

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