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https://issues.apache.org/jira/browse/LUCENE-1574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley updated LUCENE-1574:
---------------------------------

    Fix Version/s:     (was: 4.7)
                   4.8

> PooledSegmentReader, pools SegmentReader underlying byte arrays
> ---------------------------------------------------------------
>
>                 Key: LUCENE-1574
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1574
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/other
>    Affects Versions: 2.4.1
>            Reporter: Jason Rutherglen
>            Priority: Minor
>             Fix For: 4.8
>
>         Attachments: LUCENE-1574.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> PooledSegmentReader pools the underlying byte arrays of deleted docs and 
> norms for realtime search.  It is designed for use with IndexReader.clone 
> which can create many copies of byte arrays, which are of the same length for 
> a given segment.  When pooled they can be reused which could save on memory.  
> Do we want to benchmark the memory usage comparison of PooledSegmentReader vs 
> GC?  Many times GC is enough for these smaller objects.



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