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From "Aaron Kimball (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6323) Serialization should provide comparators
Date Tue, 08 Dec 2009 04:24:18 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aaron Kimball updated HADOOP-6323:
----------------------------------

    Attachment: HADOOP-6323.patch

Here's a patch that takes a first pass at implementing this. This implements the API in WritableSerialization
and AvroSerialization.

* LegacySerialization just returns null
* AvroSerialization always uses the schema in {{metadata[AVRO_SCHEMA_KEY]}}. There are no
special provisions for AvroSpecificSerialization -- should there be any?
* Note that {{BinaryData.compare()}} does not take {{l1}} and {{l2}} parameters, so those
arguments to {{RawComparator.compare()}} are ignored -- I guess this is ok, since Avro knows
the max length it should read via the schema?


> Serialization should provide comparators
> ----------------------------------------
>
>                 Key: HADOOP-6323
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6323
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io
>            Reporter: Doug Cutting
>         Attachments: HADOOP-6323.patch
>
>
> The Serialization interface should permit one to create raw comparators.

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