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From Alexey Kozhemiakin <>
Subject RE: Lowering query time
Date Tue, 04 Feb 2014 23:31:18 GMT
Btw "timing" for distributed requests are broken at this moment, it doesn't combine values
from requests to shards.  I'm working on a patch. 

-----Original Message-----
From: Jack Krupansky [] 
Sent: Tuesday, February 04, 2014 22:00
Subject: Re: Lowering query time

Add the debug=true parameter to some test queries and look at the "timing" 
section to see which search components are taking the time. Traditionally, highlighting for
large documents was a top culprit.

Are you returning a lot of data or field values? Sometimes reducing the amount of data processed
can help. Any multivalued fields with lots of values?

-- Jack Krupansky

-----Original Message-----
From: Joel Cohen
Sent: Tuesday, February 4, 2014 1:43 PM
Subject: Re: Lowering query time

1. We are faceting. I'm not a developer so I'm not quite sure how we're doing it. How can
I measure?
2. I'm not sure how we'd force this kind of document partitioning. I can see how my shards
are partitioned by looking at the clusterstate.json from Zookeeper, but I don't have a clue
on how to get documents into specific shards.

Would I be better off with fewer shards given the small size of my indexes?

On Tue, Feb 4, 2014 at 12:32 PM, Yonik Seeley <> wrote:

> On Tue, Feb 4, 2014 at 12:12 PM, Joel Cohen <>
> wrote:
> > I'm trying to get the query time down to ~15 msec. Anyone have any 
> > tuning recommendations?
> I guess it depends on what the slowest part of the query currently is.
>  If you are faceting, it's often that.
> Also, it's often a big win if you can somehow partition documents such 
> that requests can normally be serviced from a single shard.
> -Yonik
> - native off-heap filters and fieldcache for 
> solr


joel cohen, senior system engineer

e p 212.944.8000 x276 bluefly, inc. 42 w. 39th st. new york, ny 10018 <> | *fly since

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