[jira] Updated: (SOLR-998) ExternalFile fails with newest Lucene libs

["Yonik Seeley (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yonik Seeley updated SOLR-998:
------------------------------

    Attachment: SOLR-998.patch

In addition to fixing the FileFloatSource failure by allowing an  individual segment to use the cache based on the entire multireader, this patch lays the groundwork for caching per-segment reader.

The basic idea is that IndexReaders are wrapped by SolrIndexReaders each time a new IndexSearcher is opened - thus allowing any segment reader to know what multireader it is a part of... and the SolrIndexReader wrapper provides a better platform for caching than using weak references on IndexReaders.

I'll commit shortly - comments welcome.

> ExternalFile fails with newest Lucene libs
> ------------------------------------------
>
>                 Key: SOLR-998
>                 URL: https://issues.apache.org/jira/browse/SOLR-998
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Yonik Seeley
>             Fix For: 1.4
>
>         Attachments: SOLR-998.patch
>
>
> reopen() causes segments to be reused, and new segment-at-a-time searching in Lucene causes FileFloatSource to be reloaded per-segment (and thus get a hit on the old segments).  Per-segment loading of FileFloat Source is very inefficient in any case.

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