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https://issues.apache.org/jira/browse/LUCENE-3659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238448#comment-13238448
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Robert Muir commented on LUCENE-3659:
-------------------------------------
I think if we were to implement it this way, its not a burden on codecs.
By default, somewhere in lucene core inits the codec APIs with a context always.
For example SegmentInfos.write():
{code}
infosWriter.writeInfos(directory, segmentFileName, codec.getName(), this,
IOContext.DEFAULT);
{code}
and DocFieldProcessor/SegmentMerger for fieldinfos:
{code}
infosWriter.write(state.directory, state.segmentName, state.fieldInfos,
IOContext.DEFAULT);
{code}
These guys would just set this in the IOContext. Most/All codecs just pass this
along.
If a codec wants to ignore the IOContext and lie about it, thats its own choice.
So I think its an easy change.
> Improve Javadocs of RAMDirectory to document its limitations and add
> improvements to make it more GC friendly on large indexes
> ------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-3659
> URL: https://issues.apache.org/jira/browse/LUCENE-3659
> Project: Lucene - Java
> Issue Type: Task
> Affects Versions: 3.5, 4.0
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: 3.6, 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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