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Date: Fri, 1 Dec 2017 14:38:00 +0000 (UTC)
From: "ASF subversion and git services (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <JIRA.13121099.1511818619000.365129.1512139080599@Atlassian.JIRA>
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Subject: [jira] [Commented] (LUCENE-8068) Allow IndexWriter to write a
 single DWPT to disk
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archived-at: Fri, 01 Dec 2017 14:38:06 -0000


    [ https://issues.apache.org/jira/browse/LUCENE-8068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16274462#comment-16274462 ] 

ASF subversion and git services commented on LUCENE-8068:
---------------------------------------------------------

Commit 832a975bc4aaa12f7f96443bd1b2b4b6be65a48c in lucene-solr's branch refs/heads/master from [~cpoerschke]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=832a975 ]

LUCENE-8068: remove now-unused import

(to fix 'ant precommit' failing)


> Allow IndexWriter to write a single DWPT to disk
> ------------------------------------------------
>
>                 Key: LUCENE-8068
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8068
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Simon Willnauer
>             Fix For: master (8.0), 7.2
>
>         Attachments: LUCENE-8068.patch, LUCENE-8068.patch, LUCENE-8068.patch, LUCENE-8068.patch
>
>
> Today we IW can only flush a DWPT to disk if an external resource calls flush()  or refreshes a NRT reader or if a DWPT is selected as flush pending. Yet, the latter has the problem that it always ties up an indexing thread and if flush / NRT refresh is called a whole bunch of indexing threads is tied up. If IW could offer a simple `flushNextBuffer()` method that synchronously flushes the next pending or biggest active buffer to disk memory could be controlled in a more fine granular fashion from outside of the IW. This is for instance useful if more than one IW (shards) must be maintained in a single JVM / system. 


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