Re: Using Java, How to retrieve one field from all documents inside an Index.

[David Pilato]

addFields("_id") should work I think though all metadata will be sent but 
_source.

--
David ;-)
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs

> Le 6 nov. 2014 à 05:23, Ted Smith  a écrit :
> 
> Thanks. Wish there is simple Java API method to that gives a handle to get 
> the list in a single call. 
> Would it be possible to add this feature as it is often needed ( and supposed 
> to be a simple process)
> 
> On the same topic, even with scan and scroll, how can I limit the result 
> returned only include the id itself,
> without all those meta data?
> 
>> On Wednesday, November 5, 2014 9:10:35 AM UTC-5, David Pilato wrote:
>> So that's not the same story.
>> 
>> You want to do scan and scroll.
>> 
>> See 
>> http://www.elasticsearch.org/guide/en/elasticsearch/client/java-api/current/search.html
>> 
>> --
>> David ;-)
>> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>> 
>>> Le 5 nov. 2014 à 13:48, Ted Smith  a écrit :
>>> 
>>> Hello, David:
>>> 
>>> I have issue with trying to retrieve all document Ids (or a single field 
>>> value of all documents) in an index.
>>> I have about several million documents, but all I need is a list of 
>>> document id (sorted if possible), nothing else.
>>> It is taking 5 minutes now for me to get the results.  All I need is the 
>>> array/list of the Ids.
>>> What would be the fastest and most efficient (no extra data returned) ways 
>>> to do this in Java.
>>> 
>>> Thanks very much
>>> 
>>> 
>>> 
>>> 
>>> 
 On Tuesday, November 4, 2014 12:57:44 PM UTC-5, Ap wrote:
 
 Eg. Index has 100 documents with field A, B, C Z
 
 I want to retrieve a list of all A's from the 100 documents in the Index.
>>> 
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> 
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Re: Using Java, How to retrieve one field from all documents inside an Index.

[Ted Smith]

Thanks. Wish there is simple Java API method to that gives a handle to get 
the list in a single call. 
Would it be possible to add this feature as it is often needed ( and 
supposed to be a simple process)

On the same topic, even with scan and scroll, how can I limit the result 
returned only include the id itself,
without all those meta data?

On Wednesday, November 5, 2014 9:10:35 AM UTC-5, David Pilato wrote:
>
> So that's not the same story.
>
> You want to do scan and scroll.
>
> See 
> http://www.elasticsearch.org/guide/en/elasticsearch/client/java-api/current/search.html
>
> --
> David ;-)
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 5 nov. 2014 à 13:48, Ted Smith > a 
> écrit :
>
> Hello, David:
>
> I have issue with trying to retrieve all document Ids (or a single field 
> value of all documents) in an index.
> I have about several million documents, but all I need is a list of 
> document id (sorted if possible), nothing else.
> It is taking 5 minutes now for me to get the results.  All I need is the 
> array/list of the Ids.
> What would be the fastest and most efficient (no extra data returned) ways 
> to do this in Java.
>
> Thanks very much
>
>
>
>
>
> On Tuesday, November 4, 2014 12:57:44 PM UTC-5, Ap wrote:
>>
>>
>> Eg. Index has 100 documents with field A, B, C Z
>>
>> I want to retrieve a list of all A's from the 100 documents in the Index.
>>
>  -- 
> You received this message because you are subscribed to the Google Groups 
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> email to elasticsearc...@googlegroups.com .
> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/elasticsearch/eb1b4706-2c66-4d8b-8264-f4364757f53e%40googlegroups.com
>  
> 
> .
> For more options, visit https://groups.google.com/d/optout.
>
>

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Re: Using Java, How to retrieve one field from all documents inside an Index.

[David Pilato]

So that's not the same story.

You want to do scan and scroll.

See 
http://www.elasticsearch.org/guide/en/elasticsearch/client/java-api/current/search.html

--
David ;-)
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs

> Le 5 nov. 2014 à 13:48, Ted Smith  a écrit :
> 
> Hello, David:
> 
> I have issue with trying to retrieve all document Ids (or a single field 
> value of all documents) in an index.
> I have about several million documents, but all I need is a list of document 
> id (sorted if possible), nothing else.
> It is taking 5 minutes now for me to get the results.  All I need is the 
> array/list of the Ids.
> What would be the fastest and most efficient (no extra data returned) ways to 
> do this in Java.
> 
> Thanks very much
> 
> 
> 
> 
> 
>> On Tuesday, November 4, 2014 12:57:44 PM UTC-5, Ap wrote:
>> 
>> Eg. Index has 100 documents with field A, B, C Z
>> 
>> I want to retrieve a list of all A's from the 100 documents in the Index.
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "elasticsearch" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to elasticsearch+unsubscr...@googlegroups.com.
> To view this discussion on the web visit 
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> For more options, visit https://groups.google.com/d/optout.

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Re: Using Java, How to retrieve one field from all documents inside an Index.

[Ted Smith]

Hello, David:

I have issue with trying to retrieve all document Ids (or a single field 
value of all documents) in an index.
I have about several million documents, but all I need is a list of 
document id (sorted if possible), nothing else.
It is taking 5 minutes now for me to get the results.  All I need is the 
array/list of the Ids.
What would be the fastest and most efficient (no extra data returned) ways 
to do this in Java.

Thanks very much





On Tuesday, November 4, 2014 12:57:44 PM UTC-5, Ap wrote:
>
>
> Eg. Index has 100 documents with field A, B, C Z
>
> I want to retrieve a list of all A's from the 100 documents in the Index.
>

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Re: Using Java, How to retrieve one field from all documents inside an Index.

[David Pilato]

If it’s « only » 100 docs, you can use .setSize(100) to your search query and 
.addFields("a"): 

client.prepareSearch().setSize(100).addFields("a").get();



-- 
David Pilato | Technical Advocate | Elasticsearch.com
@dadoonet  | @elasticsearchfr 
 | @scrutmydocs 




> Le 4 nov. 2014 à 18:57, Ap  a écrit :
> 
> 
> Eg. Index has 100 documents with field A, B, C Z
> 
> I want to retrieve a list of all A's from the 100 documents in the Index.
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "elasticsearch" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to elasticsearch+unsubscr...@googlegroups.com 
> .
> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/elasticsearch/b36f895c-8497-4167-be7b-3227763e6fea%40googlegroups.com
>  
> .
> For more options, visit https://groups.google.com/d/optout 
> .

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