[jira] [Commented] (LUCENE-6199) Reduce per-field heap usage for indexed fields

["Michael McCandless (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-6199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14342123#comment-14342123 ] 

Michael McCandless commented on LUCENE-6199:
--------------------------------------------

bq. Maybe the fieldinfos changes can be split out to a separate patch as well.

This change is really small and does make a big difference on per-field RAM usage.

But if you are really so against it, I can just remove it entirely?

> Reduce per-field heap usage for indexed fields
> ----------------------------------------------
>
>                 Key: LUCENE-6199
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6199
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: Trunk, 5.1
>
>         Attachments: LUCENE-6199.patch, LUCENE-6199.patch
>
>
> Lucene uses a non-trivial baseline bytes of heap for each indexed
> field, and I know it's abusive for an app to create 100K indexed
> fields but I still think we can and should make some effort to reduce
> heap usage per unique field?
> E.g. in block tree we store 3 BytesRefs per field, when 3 byte[]s
> would do...



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