[jira] [Updated] (LUCENE-3736) ParallelReader is now atomic, rename to ParallelAtomicReader and also add a ParallelCompositeReader (that requires LogDocMergePolicy to have identical subreader structure)

["Uwe Schindler (Updated) (JIRA)" <ji...@apache.org>]

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

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

    Description: 
The plan is:
- Move all subreaders to ctor (builder-like API. First build reader-set, then call build)
- Rename ParallelReader to ParallelAtomicReader
- Add a ParallelCompositeReader with same builder API, but taking any CompositeReader-set and checks them that they are aligned (docStarts identical). The subreaders are ParallelAtomicReaders.

  was:
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[]

        Summary: ParallelReader is now atomic, rename to ParallelAtomicReader and also add a ParallelCompositeReader (that requires LogDocMergePolicy to have identical subreader structure)  (was: ParallelReader is now atomic, add convenience methods to wrap CompositeReaders in either "slow atomic" or "fast composite" way)
    
> ParallelReader is now atomic, rename to ParallelAtomicReader and also add a ParallelCompositeReader (that requires LogDocMergePolicy to have identical subreader structure)
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 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, LUCENE-3736.patch
>
>
> The plan is:
> - Move all subreaders to ctor (builder-like API. First build reader-set, then call build)
> - Rename ParallelReader to ParallelAtomicReader
> - Add a ParallelCompositeReader with same builder API, but taking any CompositeReader-set and checks them that they are aligned (docStarts identical). The subreaders are ParallelAtomicReaders.

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