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https://issues.apache.org/jira/browse/LUCENE-4515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487705#comment-13487705
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Robert Muir commented on LUCENE-4515:
-------------------------------------
Are we sure this is the right direction to go for MemoryIndex?
I think its being abused for highlighting: but it has other real use cases and
we shouldn't make it worse for its real use cases just because highlighting
abuses it.
instead I think if the concern is garbage then maybe just use term vectors and
compute this stuff at index time.
> 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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