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https://issues.apache.org/jira/browse/LUCENE-1121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-1121:
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Attachment: testIO.java
Attaching standalone test (testIO.java). Just run it like this:
java testIO 50
and it will create a 500 MB file and test copying it w/ transferTo vs
intermediate buffer.
> Use nio.transferTo when copying large blocks of bytes
> -----------------------------------------------------
>
> Key: LUCENE-1121
> URL: https://issues.apache.org/jira/browse/LUCENE-1121
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Store
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Attachments: LUCENE-1121.patch, LUCENE-1121.patch, testIO.java
>
>
> When building a CFS file, and also when merging stored fields (and
> term vectors, with LUCENE-1120), we copy large blocks of bytes at
> once.
> We currently do this with an intermediate buffer.
> But, nio.transferTo should be somewhat faster on OS's that offer low
> level IO APIs for moving blocks of bytes between files.
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