Hi,

I tried to query the without and with docValues, the query with docValues
was taking more time. Does it may be due to IO got involved as some data
will be in some file.

Are you sure anything else could affect your times ?


Yes I am sure. We re-indexed the whole index of 40 Million records, to
implement the docValues to improve the speed. And I somehow managed to do
the simultaneous query for with/without docValues and I am getting higher
time with docValues by approx 200ms. As far as I could see it is increasing
as no of hits are increasing.

*My configuration for docValue is:*

<field name="citydv" type="string" docValues="true" stored="true" required=
"false" omitNorms="true" multiValued="false" />


With Regards
Aman Tandon

On Thu, Jul 2, 2015 at 3:15 PM, Alessandro Benedetti <
benedetti.ale...@gmail.com> wrote:

> So first of all,
> DocValues is a strategy to store on the disk ( or in memory) the
> Un-inverted index for the field of interests.
> This has been done to SPEED UP the faceting calculus using the "fc"
> algorithm, and improve the memory usage.
> It is really weird that this is the cause of a degrading of performances.
>
> Building the DocValues should improve the query time to build facets,
> increasing the indexing time.
> Are you sure anything else could affect your times ?
>
> let's try to help you out !
>
> 2015-07-02 4:19 GMT+01:00 Aman Tandon <amantandon...@gmail.com>:
>
> > Hi,
> >
> > I tried to use the docValues to reduce the search time, but when I am
> using
> > the default format for docValues it is taking more time as compared to
> > normal faceting technique (without docValues).
> >
> > Should I go for Memory format or there is something missing?
> >
> > *Note:-* I am doing the indexing at every 10 minutes and I am using solr
> > 4.8.1
> >
> > With Regards
> > Aman Tandon
> >
>
>
>
> --
> --------------------------
>
> Benedetti Alessandro
> Visiting card : http://about.me/alessandro_benedetti
>
> "Tyger, tyger burning bright
> In the forests of the night,
> What immortal hand or eye
> Could frame thy fearful symmetry?"
>
> William Blake - Songs of Experience -1794 England
>

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