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Posted to java-user@lucene.apache.org by Chitra R <ch...@gmail.com> on 2016/06/01 05:51:28 UTC
Drawbacks of using Docvalues Fields
Hi,
I have one doubt. Actually I have indexed 50 documents for both
SortedNumericDocValuesField and IntField separately . Each document
consists of 49 fields. After that, i performed indexing & searching ( with
& without sorting) .
It seems DocValuesField indexes and searches the documents faster than
normal FieldType (eg: IntField) and also it retrieves the values more
efficent than normal field. Is their any drawbacks to
use SortedNumericDocValuesField over IntField?
Also It seems like we can use Docvalues Field(String or Numeric)
efficiently for any functionality(Searching and sorting). So generally, do
we have any drawbacks of using DocValues Field(String and Numeric)?
Known Drawbacks(on StringFields):
-->docvalues don't work on analyzed fields
-->search_analyzer cannot be specified on non-analyzed fields.
is there any specific drawback on numeric docvalue fields? is range query
not possible?? or anyother?
Thanks,
Chitra
Re: Drawbacks of using Docvalues Fields
Posted by Chitra R <ch...@gmail.com>.
Thank you so much for the information Erick.
On Wed, Jun 1, 2016 at 9:47 PM, Erick Erickson <er...@gmail.com>
wrote:
> You can tell very little about performance with 50 documents,
> so I wouldn't trust these results at all. In particular I'm pretty
> sure that your search speed will suffer _greatly_ as you get
> more and more documents in your corpus if you use only
> DocValues but don't have indexed="true" set.
>
>
> Best,
> Erick
>
> On Tue, May 31, 2016 at 10:51 PM, Chitra R <ch...@gmail.com> wrote:
> > Hi,
> > I have one doubt. Actually I have indexed 50 documents for both
> > SortedNumericDocValuesField and IntField separately . Each document
> > consists of 49 fields. After that, i performed indexing & searching (
> with
> > & without sorting) .
> >
> > It seems DocValuesField indexes and searches the documents faster
> than
> > normal FieldType (eg: IntField) and also it retrieves the values more
> > efficent than normal field. Is their any drawbacks to
> > use SortedNumericDocValuesField over IntField?
> >
> > Also It seems like we can use Docvalues Field(String or Numeric)
> > efficiently for any functionality(Searching and sorting). So generally,
> do
> > we have any drawbacks of using DocValues Field(String and Numeric)?
> >
> >
> > Known Drawbacks(on StringFields):
> > -->docvalues don't work on analyzed fields
> > -->search_analyzer cannot be specified on non-analyzed fields.
> >
> > is there any specific drawback on numeric docvalue fields? is range query
> > not possible?? or anyother?
> >
> >
> > Thanks,
> > Chitra
>
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>
Re: Drawbacks of using Docvalues Fields
Posted by Erick Erickson <er...@gmail.com>.
You can tell very little about performance with 50 documents,
so I wouldn't trust these results at all. In particular I'm pretty
sure that your search speed will suffer _greatly_ as you get
more and more documents in your corpus if you use only
DocValues but don't have indexed="true" set.
Best,
Erick
On Tue, May 31, 2016 at 10:51 PM, Chitra R <ch...@gmail.com> wrote:
> Hi,
> I have one doubt. Actually I have indexed 50 documents for both
> SortedNumericDocValuesField and IntField separately . Each document
> consists of 49 fields. After that, i performed indexing & searching ( with
> & without sorting) .
>
> It seems DocValuesField indexes and searches the documents faster than
> normal FieldType (eg: IntField) and also it retrieves the values more
> efficent than normal field. Is their any drawbacks to
> use SortedNumericDocValuesField over IntField?
>
> Also It seems like we can use Docvalues Field(String or Numeric)
> efficiently for any functionality(Searching and sorting). So generally, do
> we have any drawbacks of using DocValues Field(String and Numeric)?
>
>
> Known Drawbacks(on StringFields):
> -->docvalues don't work on analyzed fields
> -->search_analyzer cannot be specified on non-analyzed fields.
>
> is there any specific drawback on numeric docvalue fields? is range query
> not possible?? or anyother?
>
>
> Thanks,
> Chitra
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