[ 
https://issues.apache.org/jira/browse/LUCENE-2793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Varun Thacker updated LUCENE-2793:
----------------------------------

    Attachment: LUCENE-2793.patch

I have made the necessary changes. Still I might have missed out changing 
couple of Test Cases to random IOContext. 

I wanted to put it our so that you'll can have a look as soon as possible. 

> Directory createOutput and openInput should take an IOContext
> -------------------------------------------------------------
>
>                 Key: LUCENE-2793
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2793
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/store
>            Reporter: Michael McCandless
>            Assignee: Varun Thacker
>              Labels: gsoc2011, lucene-gsoc-11, mentor
>         Attachments: LUCENE-2793-nrt.patch, LUCENE-2793.patch, 
> LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, 
> LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, 
> LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, 
> LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, LUCENE-2793.patch, 
> LUCENE-2793.patch
>
>
> Today for merging we pass down a larger readBufferSize than for searching 
> because we get better performance.
> I think we should generalize this to a class (IOContext), which would hold 
> the buffer size, but then could hold other flags like DIRECT (bypass OS's 
> buffer cache), SEQUENTIAL, etc.
> Then, we can make the DirectIOLinuxDirectory fully usable because we would 
> only use DIRECT/SEQUENTIAL during merging.
> This will require fixing how IW pools readers, so that a reader opened for 
> merging is not then used for searching, and vice/versa.  Really, it's only 
> all the open file handles that need to be different -- we could in theory 
> share del docs, norms, etc, if that were somehow possible.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org

Reply via email to