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From "Uwe Schindler (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3736) ParallelReader is now atomic, add convenience methods to wrap CompositeReaders in either "slow atomic" or "fast composite" way
Date Sun, 05 Feb 2012 23:57:59 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler updated LUCENE-3736:
----------------------------------

    Attachment: LUCENE-3736.patch

Attached is a patch implementing the above proposal using the builder pattern. The builder
pattern (sorry Robert), is the only nice setup that allows to set properties like ignroing
stored fields on the parallel readers, but make the built reader unmodifiable!
                
> 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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