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https://issues.apache.org/jira/browse/LUCENE-753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12550182
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Michael McCandless commented on LUCENE-753:
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{quote}
Is that enough of a difference that it might be worth having FSDirectory use
different implementations of FSIndexInput based on the value of
Constants.WINDOWS (and perhaps JAVA_VERSION)?
{quote}
+1
I think having good out-of-the-box defaults is extremely important (most users
won't tune), and given the substantial cross platform differences here I think
we should conditionalize the defaults according to the platform.
> 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, 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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