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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3153) For HA, a logical name is visible in URIs - add an explicit logical name
Date Tue, 08 May 2012 16:11:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270571#comment-13270571
] 

Aaron T. Myers commented on HDFS-3153:
--------------------------------------

bq. A configuration change will affect users - The URI is derived from this configuration
parameter.

The URI is already derived from a configuration parameter, it's just that that configuration
parameter is overloaded to be both the nameservice ID and the URI which users refer to from
clients. As I understand the proposal, it's not obvious to me that this change would necessarily
affect users, since the publicly-visible URIs could theoretically remain the same both before
and after this change - only the underlying configs would change.

bq. Do you feel it is acceptable to make this change after 2.0 is shipped?

I think we should see a concrete proposal or patch to be able to make the determination as
to whether or not 2.0.0 can ship without this change. Only then can we determine whether or
not this change can be made in a backward-compatible fashion. Regardless of that, however,
I agree with Todd and Eli that it seems fine to ship 2.0.0-alpha without this change, as it
is a clearly-labeled alpha release.
                
> For HA, a logical name is visible in URIs - add an explicit logical name
> ------------------------------------------------------------------------
>
>                 Key: HDFS-3153
>                 URL: https://issues.apache.org/jira/browse/HDFS-3153
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Sanjay Radia
>            Priority: Blocker
>             Fix For: 2.0.0
>
>


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