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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2015/11/06 16:35:27 UTC
[jira] [Resolved] (LUCENE-5688) NumericDocValues fields with sparse
data can be compressed better
[ https://issues.apache.org/jira/browse/LUCENE-5688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand resolved LUCENE-5688.
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Resolution: Fixed
Fixed via LUCENE-6863
> NumericDocValues fields with sparse data can be compressed better
> ------------------------------------------------------------------
>
> Key: LUCENE-5688
> URL: https://issues.apache.org/jira/browse/LUCENE-5688
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Varun Thacker
> Priority: Minor
> Attachments: LUCENE-5688.patch, LUCENE-5688.patch, LUCENE-5688.patch
>
>
> I ran into this problem where I had a dynamic field in Solr and indexed data into lots of fields. For each field only a few documents had actual values and the remaining documents the default value ( 0 ) got indexed. Now when I merge segments, the index size jumps up.
> For example I have 10 segments - Each with 1 DV field. When I merge segments into 1 that segment will contain all 10 DV fields with lots if 0s.
> This was the motivation behind trying to come up with a compression for a use case like this.
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