[
https://issues.apache.org/jira/browse/HIVE-2097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13160734#comment-13160734
]
alex gemini commented on HIVE-2097:
-----------------------------------
I'm not quit sure I explain the columnar database execution strategy clearly,I
hope the following material will help:
#1 http://www.infoq.com/news/2011/09/nosqlnow-columnar-databases
#2 http://www.oscon.com/oscon2010/public/schedule/detail/15561
#3 http://www.vertica.com/2010/05/26/why-verticas-compression-is-better/
#4 http://www.vertica.com/2011/09/01/the-power-of-projections-part-1/
Good luck.
> 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
>
> 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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
