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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7692) Add utility class to generate ordered byte[] serialization
Date Mon, 04 Mar 2013 01:51:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591932#comment-13591932
] 

James Taylor commented on HBASE-7692:
-------------------------------------

Ran some micro perf benchmarks of BigDecimal serialization/deserialization for Phoenix versus
Orderly. Both have the same property that their binary representation sort according to their
natural order. The test measures the serialization and deserialization time for values from
-1M to 1M.  Phoenix was 3.8x faster while using 3.5% more memory than Orderly.

Probably wouldn't be too difficult to replace the Orderly serialization logic with the Phoenix
one for this type.



                
> Add utility class to generate ordered byte[] serialization
> ----------------------------------------------------------
>
>                 Key: HBASE-7692
>                 URL: https://issues.apache.org/jira/browse/HBASE-7692
>             Project: HBase
>          Issue Type: Improvement
>          Components: util
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>             Fix For: 0.95.0
>
>         Attachments: HBASE-7692.v1.patch, HBASE-7692.v2.patch, HBASE-7692.v3.patch, HBASE-7692.v4.patch,
HBASE-7692.v5.patch
>
>
> The current Bytes utility class works, but produces output that does not maintain the
native sort ordering of the input value. This results in, for example, a negative value that
does not necessarily sort before a positive value. HBase should provide a canonical implementation
of such a serialization format so that third-parties can reliably build on top of HBase. This
will allow an implementation for HIVE-3634, HIVE-2599, or HIVE-2903 that is compatible with
similar features in Pig.

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