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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7557) Make IPC and RPC headers be extensible
Date Thu, 08 Sep 2011 16:18:09 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13100422#comment-13100422
] 

Doug Cutting commented on HADOOP-7557:
--------------------------------------

Extensibility in internet protocols (SMTP, DNS, LDAP, HTTP, SASL Digest, etc.) is usually
provided through lists of key/value pairs.  All implementations do not require any particular
library.  Protocol specifications are kept more independent.

It would be good if our protocol metadata is easily interconvertable with other network protocols,
e.g., if Hadoop RPC metadata can be easily copied into HTTP headers and/or Avro RPC metadata
and vice versa.

So I would advocate that extensibility be provided through the well-known protocol extensibility
mechanism of a list of key/value pairs.

Do we have a case where this is inadequate?

> Make  IPC and RPC headers be extensible
> ---------------------------------------
>
>                 Key: HADOOP-7557
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7557
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Sanjay Radia
>


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