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https://issues.apache.org/jira/browse/LUCENE-753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12550351
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Brian Pinkerton commented on LUCENE-753:
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Yeah, the file was full of zeroes. But I created the files w/o holes and was
using filesystems that don't compress file contents. Just to be sure, though,
I repeated the tests with a file with random contents; the results above still
hold.
> Use NIO positional read to avoid synchronization in FSIndexInput
> ----------------------------------------------------------------
>
> Key: LUCENE-753
> URL: https://issues.apache.org/jira/browse/LUCENE-753
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Store
> Reporter: Yonik Seeley
> Attachments: FileReadTest.java, FileReadTest.java,
> FSIndexInput.patch, FSIndexInput.patch
>
>
> As suggested by Doug, we could use NIO pread to avoid synchronization on the
> underlying file.
> This could mitigate any MT performance drop caused by reducing the number of
> files in the index format.
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