[jira] [Updated] (JCR-3282) Optimize usage of norms

["Alex Parvulescu (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JCR-3282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Parvulescu updated JCR-3282:
---------------------------------

    Attachment: JCR-3282.patch

attaching proposed patch.

Based on the indexing config we know if a field has its boost changed or not, so if a field has no boost setting we can safely disable norms.
                
> Optimize usage of norms
> -----------------------
>
>                 Key: JCR-3282
>                 URL: https://issues.apache.org/jira/browse/JCR-3282
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>          Components: indexing, jackrabbit-core
>            Reporter: Alex Parvulescu
>            Assignee: Alex Parvulescu
>         Attachments: JCR-3282.patch
>
>
> There is a very significant potential for optimizing the size of the search index.
> We have seen a case where there were multiple segments with about the same number of nodes (roughly 10 million), but the size on disk was very different.
> One segment was 19 GB while all others where around 3 GB. The major difference was the number of fields indexed. The large segment had significantly more fields, which resulted in a large norms file.
> We should go through our implementation and see where norms are really necessary and disable tracking of norms wherever possible.

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