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From "alex gemini (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5612) Data types for HBase values
Date Tue, 26 Jun 2012 02:10:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13401110#comment-13401110

alex gemini commented on HBASE-5612:

for fixed-length data type(byte,integer,double etc),we can store key-length in RLE encoding
like RCFile's metedata did. for data type like String for column "email" or "address" , we
can use prefix compression or dictionary compression to store most used word in hfile's head,
this will both save memory and disk space.
> Data types for HBase values
> ---------------------------
>                 Key: HBASE-5612
>                 URL: https://issues.apache.org/jira/browse/HBASE-5612
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Mikhail Bautin
>            Assignee: Mikhail Bautin
> In many real-life applications all values in a certain column family are of a certain
data type, e.g. 64-bit integer. We could specify that in the column descriptor and enable
data type-specific compression such as variable-length integer encoding.

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