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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1026) Provide a simple way to concurrently access a Lucene index from multiple threads
Date Sat, 16 Feb 2008 01:58:08 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mark Miller updated LUCENE-1026:
--------------------------------

    Attachment: IndexAccessor-2.15.2008.zip

Fixes a bug caused by threads sharing a Map when using a MultiIndexAccessor. Each thread now
has its own Map. MultiIndexAccessor is no longer considered thread safe. It was only considered
to be a thread safe class before because it did MultiSearcher caching. Now that only sub Searchers
are cached, there is no reason to share this class across threads. This change fixes the bug.
Be sure to release a MutliSearcher with the *same* MultiIndexAccessor that created it. 

> Provide a simple way to concurrently access a Lucene index from multiple threads
> --------------------------------------------------------------------------------
>
>                 Key: LUCENE-1026
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1026
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Index, Search
>            Reporter: Mark Miller
>            Priority: Minor
>         Attachments: DefaultIndexAccessor.java, DefaultMultiIndexAccessor.java, IndexAccessor-02.04.2008.zip,
IndexAccessor-02.07.2008.zip, IndexAccessor-1.26.2008.zip, IndexAccessor-2.15.2008.zip, IndexAccessor.java,
IndexAccessor.zip, IndexAccessorFactory.java, MultiIndexAccessor.java, shai-IndexAccessor-2.zip,
shai-IndexAccessor.zip, shai-IndexAccessor3.zip, SimpleSearchServer.java, StopWatch.java,
TestIndexAccessor.java
>
>
> For building interactive indexes accessed through a network/internet (multiple threads).
> This builds upon the LuceneIndexAccessor patch. That patch was not very newbie friendly
and did not properly handle MultiSearchers (or at the least made it easy to get into trouble).
> This patch simplifies things and provides out of the box support for sharing the IndexAccessors
across threads. There is also a simple test class and example SearchServer to get you started.
> Future revisions will be zipped.
> Works pretty solid as is, but could use the ability to warm new Searchers.

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