lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Erick Erickson (JIRA)" <>
Subject [jira] [Closed] (LUCENE-769) [PATCH] Performance improvement for some cases of sorted search
Date Sun, 10 Mar 2013 13:19:12 GMT


Erick Erickson closed LUCENE-769.

    Resolution: Won't Fix

SPRING_CLEANING_2013 We can reopen if necessary. Think this code has been extensively re-worked
> [PATCH] Performance improvement for some cases of sorted search
> ---------------------------------------------------------------
>                 Key: LUCENE-769
>                 URL:
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>    Affects Versions: 2.0.0
>            Reporter: Artem Vasiliev
>         Attachments: selfContained.patch
> It's a small addition to Lucene that significantly lowers memory consumption and improves
performance for sorted searches with frequent index updates and relatively big indexes (>1mln
docs) scenario. This solution supports only single-field sorting currently (which seem to
be quite popular use case). Multiple fields support can be added without much trouble.
> The solution is this: documents from the sorting set (instead of given field's values
from the whole index - current FieldCache approach) are cached in a WeakHashMap so the cached
items are candidates for GC.  Their fields values are then fetched from the cache and compared
while sorting.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see:

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message