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https://issues.apache.org/jira/browse/LUCENE-1026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12565174#action_12565174
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Mark Miller commented on LUCENE-1026:
-------------------------------------

The last ZIP has an incomplete Reading IndexReader reopen method. Clerical 
error while zipping.

New ZIP in the next couple days rectifying that, as well as:

Ability to warm Searchers before putting them into rotation.
Removed sync blocks around getting an IndexAccessor by using a 
ConcurrentHashMap. Nice contention relief.

BTW, code relies on min Java 1.5

> 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-1.26.2008.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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