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Date: Thu, 11 Mar 2010 19:08:27 +0000 (UTC)
From: "ryan rawson (JIRA)" <jira@apache.org>
To: hbase-issues@hadoop.apache.org
Subject: [jira] Commented: (HBASE-2219) stop using code mapping for method
 names in the RPC
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    [ https://issues.apache.org/jira/browse/HBASE-2219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12844171#action_12844171 ] 

ryan rawson commented on HBASE-2219:
------------------------------------

I have a pending forward ported patch. Ill commit it soon.

On Mar 11, 2010 1:58 PM, "Jean-Daniel Cryans (JIRA)" <jira@apache.org>
wrote:


[
https://issues.apache.org/jira/browse/HBASE-2219?page=com.atlassian.jira.plugin.system.issue.
..


> stop using code mapping for method names in the RPC
> ---------------------------------------------------
>
>                 Key: HBASE-2219
>                 URL: https://issues.apache.org/jira/browse/HBASE-2219
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 0.20.3
>            Reporter: ryan rawson
>            Assignee: ryan rawson
>            Priority: Blocker
>             Fix For: 0.20.4, 0.21.0
>
>         Attachments: HBASE-2219-2.patch, HBASE-2219.patch
>
>
> since we use a sorted mapping of method names -> codes and send that over the wire, even trivial changes, such as adding a new call, become wire-incompatible.  This means many features which could easily have gone into a minor update must wait for a major update.  Eg: 2066, 1845, etc.
> This will increase on-wire overhead, but the compatibility is worth it I think.

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