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From "Shai Erera (JIRA)" <>
Subject [jira] Commented: (LUCENE-2778) Allow easy extension of RAMDirectory
Date Fri, 26 Nov 2010 20:33:13 GMT


Shai Erera commented on LUCENE-2778:

That's how I worked so far ... I usually develop on 3x and then merge to trunk. I didn't think
it will cause troubles :). I don't mind developing on trunk and merging to 3x if that will
improve anything, but would the history of 3x look like then? Perhaps we should avoid merging
on a regular basis and instead apply the patch on both, and then once in a while we do a big
mergeprops merge?

> Allow easy extension of RAMDirectory
> ------------------------------------
>                 Key: LUCENE-2778
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Store
>            Reporter: Shai Erera
>            Assignee: Shai Erera
>            Priority: Minor
>             Fix For: 3.1, 4.0
>         Attachments: LUCENE-2778.patch
> RAMDirectory uses RAMFiles to store the data. RAMFile offers a newBuffer() method for
extensions to override and allocate buffers differently, from e.g. a pool or something. However,
RAMDirectory always allocates RAMFile and doesn't allow allocating a RAMFile extension, which
makes RAMFile.newBuffer() unusable.
> I think we can simply introduce a newRAMFile() method on RAMDirectory and make the RAMFiles
map protected, and it will allow really extending RAMDir.
> I will post a patch later.

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