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https://issues.apache.org/jira/browse/LUCENE-3736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13212674#comment-13212674
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Robert Muir commented on LUCENE-3736:
-------------------------------------
{quote}
(after the heavy commit of Robert, rev. 1291679)
{quote}
Hey, maybe only a medium-heavy commit: i did reply to the jenkins failure with
a patch to the list before committing :)
{quote}
The new implementation builds the ParallelFields instance using the FieldsEnums
of the parallel readers, which is much more correct than iterating FieldInfos
and checking for indexed fields.
{quote}
+1, when debugging i was a little confused not just about how it was built but
where in the code... I think this is more intuitive!
> 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-improveTestCoverage.patch,
> LUCENE-3736-readerMaps.patch, LUCENE-3736.patch, LUCENE-3736.patch,
> LUCENE-3736.patch, LUCENE-3736.patch, LUCENE-3736.patch, LUCENE-3736.patch,
> LUCENE-3736.patch, LUCENE-3736.patch, 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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