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From "Uwe Schindler (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3659) Allow per-RAMFile buffer sizes based on IOContext and source of data (e.g. copy from another directory)
Date Tue, 27 Mar 2012 12:36:27 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13239407#comment-13239407
] 

Uwe Schindler commented on LUCENE-3659:
---------------------------------------

{quote}
I also don't think RAMFile should be public, ie, the only way to make
changes to a file stored in a RAMDir is via RAMOutputStream. We can
do this separately...
{quote}

RAMFile's public ctor without directory is only used by PrefixCodedTerms, itself used only
by FrozenBufferedDeletes. I don't really see the real use case to do this like that. We can
maybe replace that using a FST (it is already sorted by BytesRef) or using PagesBytes? Alternatively
replace the whole thing with OutputStreamDataOutput(new ByteArrayOutputStream())?
                
> Allow per-RAMFile buffer sizes based on IOContext and source of data (e.g. copy from
another directory)
> -------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3659
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3659
>             Project: Lucene - Java
>          Issue Type: Sub-task
>    Affects Versions: 4.0
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>             Fix For: 4.0
>
>         Attachments: LUCENE-3659.patch, LUCENE-3659.patch, LUCENE-3659.patch
>
>
> Spinoff from several dev@lao issues:
> - [http://mail-archives.apache.org/mod_mbox/lucene-dev/201112.mbox/%3C001001ccbf1c%2471845830%24548d0890%24%40thetaphi.de%3E]
> - issue LUCENE-3653
> The use cases for RAMDirectory are very limited and to prevent users from using it for
e.g. loading a 50 Gigabyte index from a file on disk, we should improve the javadocs.

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