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Date: Fri, 11 Mar 2011 12:35:59 +0000 (UTC)
From: "Earwin Burrfoot (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] Commented: (LUCENE-2960) Allow (or bring back) the ability
 to setRAMBufferSizeMB on an open IndexWriter
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    [ https://issues.apache.org/jira/browse/LUCENE-2960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13005617#comment-13005617 ] 

Earwin Burrfoot commented on LUCENE-2960:
-----------------------------------------

As I said on the list - if one needs to change IW config, he can always recreate IW with new settings.
Such changes cannot happen often enough for recreation to affect indexing performance.

The fact that you can change IW's behaviour post-construction by modifying unrelated IWC instance is frightening. IW should either make a private copy of IWC when constructing, or IWC should be made immutable.

> 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
>
>
> 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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