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https://issues.apache.org/jira/browse/LUCENE-2471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12870560#action_12870560
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Michael McCandless commented on LUCENE-2471:
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I think this issue makes sense, separate from LUCENE-2455? Ie this issue is
for bulk copying when you have IndexInput/Output already open (I don't think
LUCENE-2455 covers this?). Whereas LUCENE-2455 is operating on file names...
> Supporting bulk copies in Directory
> -----------------------------------
>
> Key: LUCENE-2471
> URL: https://issues.apache.org/jira/browse/LUCENE-2471
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Earwin Burrfoot
> Fix For: 3.1, 4.0
>
>
> A method can be added to IndexOutput that accepts IndexInput, and writes
> bytes using it as a source.
> This should be used for bulk-merge cases (offhand - norms, docstores?). Some
> Directories can then override default impl and skip intermediate buffers
> (NIO, MMap, RAM?).
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