[
https://issues.apache.org/jira/browse/LUCENE-3214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael McCandless updated LUCENE-3214:
---------------------------------------
Attachment: LUCENE-3214.patch
Prototype hacked up but working patch.
> Ability to mlock certain fields from the terms dict
> ---------------------------------------------------
>
> Key: LUCENE-3214
> URL: https://issues.apache.org/jira/browse/LUCENE-3214
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Michael McCandless
> Attachments: LUCENE-3214.patch
>
>
> This is a hacked up prototype! It works but I'm not sure how to get this to
> a committable point.
> The patch invokes mlock() (tested only on Linux), locking pages from the
> terms dictionary file that hold terms for a specified field. You can only do
> this with MMapDirectory.
> I used this to lock pages for the "id" field in the NRT stress test; it's an
> alternative to MemoryCodec. But, it requires you set up the OS to allow the
> app/user to lock pages in RAM.
> It works very well in reducing the NRT reopen latency even when large merges
> are running...
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
