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From "eric baldeschwieler (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6659) Switch RPC to use Avro
Date Fri, 09 Apr 2010 06:51:55 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12855298#action_12855298
] 

eric baldeschwieler commented on HADOOP-6659:
---------------------------------------------

Hi Doug,

-1

The RPC system is fundamental to hadoop's stability.  Until your proposal has been formally
documented, including an IDL, which I think is critical to the stated goal of backward compatibility,
I'm not going to be comfortable seeing it committed.  Beyond understanding the design, you
need a testing plan and test results to review.  Without this step, you will be throwing a
huge tax onto others in the community.  We have the downside of all this change and have to
work hard to debug your work, yet we see no benefit.

If you want to perform radical surgery on Hadoop, you need to convince the community that
taking your work is worth the risk you are imposing on us.  Bugs in Hadoop can take down businesses.
 In yahoo's case, they can cost us millions of dollars in lost revenue.

Perhaps you can proceed as you suggest on a branch where you will not disrupt other work or
impose an unfair testing burden on the project?

E14


> Switch RPC to use Avro
> ----------------------
>
>                 Key: HADOOP-6659
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6659
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>            Reporter: Doug Cutting
>
> This is an umbrella issue for moving HDFS and MapReduce RPC to use Avro.

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