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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3216) Store DocValues per segment instead of per field
Date Wed, 29 Jun 2011 11:37:28 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Simon Willnauer updated LUCENE-3216:
------------------------------------

    Attachment: LUCENE-3216.patch

this patch converts all docvalue types to index into memory. The majority now also merges
directly to disk except of PackedInts, sorted and deref byte variants



> Store DocValues per segment instead of per field
> ------------------------------------------------
>
>                 Key: LUCENE-3216
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3216
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/index
>    Affects Versions: 4.0
>            Reporter: Simon Willnauer
>            Assignee: Simon Willnauer
>             Fix For: 4.0
>
>         Attachments: LUCENE-3216.patch, LUCENE-3216.patch, LUCENE-3216.patch, LUCENE-3216_floats.patch
>
>
> currently we are storing docvalues per field which results in at least one file per field
that uses docvalues (or at most two per field per segment depending on the impl.). Yet, we
should try to by default pack docvalues into a single file if possible. To enable this we
need to hold all docvalues in memory during indexing and write them to disk once we flush
a segment. 

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