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From Rick Leir <rl...@leirtech.com>
Subject Re: in-place atomic updates for numeric docValue field
Date Fri, 05 May 2017 10:56:19 GMT
Dan, If you don't mind using a float format DocValues field, you could 
store NAN (Not A Number). But any sorting operations would be slower, or 
size comparisons. Floats might be entirely inappropriate, but I thought 
it is worth a mention. Cheers -- Rick


On 2017-05-04 10:55 AM, Dan . wrote:
> Hi Shawn,
>
> Thanks for the suggestion.
>
> I gave that a try but unfortunately it didn't work.
>
> Delete somehow would be really useful, seems wasteful to have e.g. -1
> representing null.
>
> Cheers,
> Dan
>
> On 4 May 2017 at 15:30, Shawn Heisey <apache@elyograg.org> wrote:
>
>> On 5/4/2017 7:40 AM, Dan . wrote:
>>> I have a field like this:
>>>
>>> <fieldType name="integer" class="solr.TrieIntField" omitNorms="true"/>
>>> <field name="popularity" type="integer" indexed="false" stored="false"
>>> docValues="true" multiValued="false"/>
>>>
>>> so I can do a fast in-place atomic updates
>>>
>>> However if I do e.g.
>>>
>>> curl -H 'Content-Type: application/json'
>>> 'http://localhost:8983/solr/collection/update?commit=true'
>>> --data-binary '
>>> [{
>>>   "id":"my_id",
>>>   "popularity":{"set":null}
>>> }]'
>>>
>>> then I'd expect the popularity field to be removed, however it's not.
>> I'm not really sure how that "null" value will be interpreted.  It's
>> entirely possible that this won't actually delete the field.
>>
>> I think we need a "delete" action for Atomic Updates, to entirely remove
>> the field regardless of what it currently contains.  There is "remove"
>> and "removeRegex", which MIGHT be enough, but I think delete would be
>> useful syntactic sugar.
>>
>> Dan, can you give the following update JSON a try instead?  I am not
>> guaranteeing that this will do the job, but given the current
>> functionality, I think this is the option most likely to work:
>>
>> {
>>   "id":"my_id",
>>   "popularity":{"removeRegex":".*"}
>> }
>>
>> Thanks,
>> Shawn
>>
>>


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