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https://issues.apache.org/jira/browse/LUCENE-2960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13007036#comment-13007036
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Mark Miller commented on LUCENE-2960:
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{quote}I really don't like that this approach would split IW configuration
into two places. Like you look at the javadocs for IWC and think that
you cannot change the RAM buffer size.
IWC should be the one place you go to see which settings you can
change about the IW. That some of these settings take effect "live"
while others do not is really an orthogonal (and I think, secondary,
ie handled fine w/ jdocs) aspect/concern.{quote}
You can just as easily argue that the javadocs for IWC could explain that live
settings are on the IW.
That pattern just smells wrong.
{quote}
But, if you want to change something live, you can
IW.getConfig().setFoo(...). The config instance is a private clone to
that IW.
{quote}
This is better than nothing.
Another thought is to offer all settings on the IWC for init convenience and
exposure and then add javadoc about updaters on IW for those settings that can
be changed on the fly - or one update method and enums...
> Allow (or bring back) the ability to setRAMBufferSizeMB on an open IndexWriter
> ------------------------------------------------------------------------------
>
> Key: LUCENE-2960
> URL: https://issues.apache.org/jira/browse/LUCENE-2960
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Reporter: Shay Banon
> Priority: Blocker
> Fix For: 3.1, 4.0
>
> Attachments: LUCENE-2960.patch
>
>
> In 3.1 the ability to setRAMBufferSizeMB is deprecated, and removed in trunk.
> It would be great to be able to control that on a live IndexWriter. Other
> possible two methods that would be great to bring back are
> setTermIndexInterval and setReaderTermsIndexDivisor. Most of the other
> setters can actually be set on the MergePolicy itself, so no need for setters
> for those (I think).
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