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https://issues.apache.org/jira/browse/LUCENE-753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12550187
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robert engels commented on LUCENE-753:
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As an aside, if the Lucene people voted on the Java bug (and or sent emails via
the proper channels), hopefully the underlying bug can be fixed in the JVM.
In my opinion it is a serious one - ruins any performance gains of using NIO on
files.
> 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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