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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1727) Order of stored Fields not maintained
Date Wed, 01 Jul 2009 09:24:47 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless updated LUCENE-1727:
---------------------------------------

    Fix Version/s: 2.9

> Order of stored Fields not maintained
> -------------------------------------
>
>                 Key: LUCENE-1727
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1727
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.4, 2.4.1
>            Reporter: Hoss Man
>            Assignee: Michael McCandless
>             Fix For: 2.9
>
>
> As noted in these threads...
> http://www.nabble.com/Order-of-fields-returned-by-Document.getFields%28%29-to21034652.html
> http://www.nabble.com/Order-of-fields-within-a-Document-in-Lucene-2.4%2B-to24210597.html
> somewhere prior to Lucene 2.4.1 a change was introduced that prevents the Stored fields
of a Document from being returned in same order that they were originally added in.  This
can cause serious performance problems for people attempting to use LoadFirstFieldSelector
or a custom FieldSelector with the LOAD_AND_BREAK, or the SIZE_AND_BREAK options (since the
fields don't come back in the order they expect)
> Speculation in the email threads is that the origin of this bug is code introduced by
LUCENE-1301 -- but the purpose of that issue was refactoring, so if it really is the cause
of the change this would seem to be a bug, and not a side affect of a conscious implementation
change.
> Someone who understands indexing internals should investigate this.  At a minimum, if
it's decided that this is not actual a bug, then prior to resolving this bug the wiki docs
and some of the FIeldSelector javadocs should be updated to make it clear what order Fields
will be returned in.

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