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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1026) Provide a simple way to concurrently access a Lucene index from multiple threads
Date Sun, 03 Feb 2008 14:04:08 GMT

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

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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