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https://issues.apache.org/jira/browse/HIVE-2097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krishna Kumar updated HIVE-2097:
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Attachment: datacomp.tar.gz
unrefactored source for all the implemented compression codecs
> Explore mechanisms for better compression with RC Files
> -------------------------------------------------------
>
> Key: HIVE-2097
> URL: https://issues.apache.org/jira/browse/HIVE-2097
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor, Serializers/Deserializers
> Reporter: Krishna Kumar
> Assignee: Krishna Kumar
> Priority: Minor
> Attachments: datacomp.tar.gz
>
>
> Optimization of the compression mechanisms used by RC File to be explored.
> Some initial ideas
>
> 1. More efficient serialization/deserialization based on type-specific and
> storage-specific knowledge.
>
> For instance, storing sorted numeric values efficiently using some delta
> coding techniques
> 2. More efficient compression based on type-specific and storage-specific
> knowledge
> Enable compression codecs to be specified based on types or individual
> columns
> 3. Reordering the on-disk storage for better compression efficiency.
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