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Date: Wed, 31 Oct 2012 14:25:13 +0000 (UTC)
From: "Alan Woodward (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <129112755.50508.1351693513158.JavaMail.jiratomcat@arcas>
In-Reply-To: <209220603.49934.1351684152005.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (LUCENE-4515) Make MemoryIndex more memory
 efficient
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    [ https://issues.apache.org/jira/browse/LUCENE-4515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487817#comment-13487817 ] 

Alan Woodward commented on LUCENE-4515:
---------------------------------------

We use MemoryIndex for monitoring, very similar to the ES percolator, running lots of queries over individual documents in a queue.  We've occasionally had GC issues with this, so anything that makes the garbage collector happier is good for us.
                
> Make MemoryIndex more memory efficient
> --------------------------------------
>
>                 Key: LUCENE-4515
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4515
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/other
>    Affects Versions: 4.0, 4.1, 5.0
>            Reporter: Simon Willnauer
>             Fix For: 4.1, 5.0
>
>         Attachments: LUCENE-4515.patch
>
>
> Currently MemoryIndex uses BytesRef objects to represent terms and holds an int[] per term per field to represent postings. For highlighting this creates a ton of objects for each search that 1. need to be GCed and 2. can't be reused.

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