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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AVRO-108) add binary comparator
Date Mon, 31 Aug 2009 18:07:32 GMT

     [ https://issues.apache.org/jira/browse/AVRO-108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated AVRO-108:
------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this.

> add binary comparator
> ---------------------
>
>                 Key: AVRO-108
>                 URL: https://issues.apache.org/jira/browse/AVRO-108
>             Project: Avro
>          Issue Type: New Feature
>          Components: java
>            Reporter: Doug Cutting
>            Assignee: Doug Cutting
>             Fix For: 1.0.1
>
>         Attachments: AVRO-108.java
>
>
> Hadoop MapReduce performance benefits greatly if data may be compared without deserializing
to an object, but rather by examining its serialized bytes directly.  Such "raw" comparators
are typically written by hand in Hadoop, and are very fragile.
> With Avro it is possible to generically compare two serialized byte sequences if their
schema is known.  This should work for any Avro data, regardless of how it was serialized
or how it will be deserialized.

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