[jira] Closed: (LUCENE-1741) Make MMapDirectory.MAX_BBUF user configureable to support chunking the index files in smaller parts

["Uwe Schindler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-1741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Uwe Schindler closed LUCENE-1741.
---------------------------------

    Resolution: Fixed

Committed revision: 793826

Thanks Eks!

About the automatic fallback to a SimpleFSIndexInput for small files like segment*, *.del, I open another issue targeted to 3.1. MMapping of small files is wasting system resources and may be slower than just reading a few bytes with SimpleFSIndexInput.

> Make MMapDirectory.MAX_BBUF user configureable to support chunking the index files in smaller parts
> ---------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-1741
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1741
>             Project: Lucene - Java
>          Issue Type: Improvement
>    Affects Versions: 2.9
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1741.patch, LUCENE-1741.patch, LUCENE-1741.patch
>
>
> This is a followup for java-user thred: http://www.lucidimagination.com/search/document/9ba9137bb5d8cb78/oom_with_2_9#9bf3b5b8f3b1fb9b
> It is easy to implement, just add a setter method for this parameter to MMapDir.

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