As long as you call SM.maybeRefresh from a dedicated refresh thread
(not from a query's thread) it will work well.

You may want to use a warmer so that the new searcher is warmed before
becoming visible to incoming queries ... this ensures any lazy data
structures are initialized by the time a query sees them.

Mike McCandless

http://blog.mikemccandless.com


On Wed, May 27, 2015 at 7:16 AM, kiwi clive
<kiwi_cl...@yahoo.com.invalid> wrote:
> Hi Guys
>
> We are considering changing our Lucene indexer / search architecture from 2 
> separate JVMs to a single one to benefit from the very latest index views NRT 
> readers provide.
>
> In the past we cached our IndexSearchers to avoid cold searches every time 
> and reopened them periodically.  In the single-JVM model where we will be 
> keeping the IndexWriters open for long periods, will we still face the same 
> problem, or will calling searcherManager.maybeRefresh() periodically be 
> enough to guarantee fast searches (as well as near-real time views)?
>
> (We intend to instantiate our SearcherManager with the IndexWriter rather 
> than a Directory.)
>
>
> ThanksClive

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