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From "Uwe Schindler (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3736) ParallelReader is now atomic, add convenience methods to wrap CompositeReaders in either "slow atomic" or "fast composite" way
Date Mon, 06 Feb 2012 00:01:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13200975#comment-13200975
] 

Uwe Schindler commented on LUCENE-3736:
---------------------------------------

There are som test todos: The tests for parallel readers are very simplistic and have only
2 documents (which is especially stupid for composite readers to test them). We should raise
number of documents.
                
> ParallelReader is now atomic, add convenience methods to wrap CompositeReaders in either
"slow atomic" or "fast composite" way
> ------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3736
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3736
>             Project: Lucene - Java
>          Issue Type: Sub-task
>          Components: core/index
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>             Fix For: 4.0
>
>         Attachments: LUCENE-3736.patch, LUCENE-3736.patch
>
>
> ParallelReader is now atomic. We should add a sugar wrapper method to allow synchronized
composite readers (with same segment sizes) to be aligned with MultiReaders or wrapped by
Slow:
> - one ParallelReader with Slow wrapped parallel readers, they only need same maxDoc()
(and deletions)
> - a MultiReader containing all sub-ParallelReaders. This needs CompositeReaders with
same docStarts[]

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