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https://issues.apache.org/jira/browse/HADOOP-2404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley updated HADOOP-2404:
----------------------------------

    Assignee: Owen O'Malley  (was: Konstantin Shvachko)
      Status: Open  (was: Patch Available)

1. The method as proposed isn't general enough to be useful to more than this 
context.
2. It does not handle the case where the port or just the bind address are 
defined in the old style, but not the other.
3. It will always generate a warning about the task tracker, since the old 
value was set by the code.
4. The task tracker report bind address changed syntax without changing 
configuration names.
5. The configuration now lets users define non-zero ports for the task tracker 
server.

Since Konst is sick, I'll roll a new patch.

> HADOOP-2185 breaks compatibility with hadoop-0.15.0
> ---------------------------------------------------
>
>                 Key: HADOOP-2404
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2404
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.16.0
>            Reporter: Arun C Murthy
>            Assignee: Owen O'Malley
>            Priority: Blocker
>             Fix For: 0.16.0
>
>         Attachments: ConfigConvert.patch, ConfigConvert2.patch, 
> ConfigConvert3.patch, ConfigurationConverter.patch
>
>
> HADOOP-2185 removed the following configuration parameters:
> {noformat}
> dfs.secondary.info.port
> dfs.datanode.port
> dfs.info.port
> mapred.job.tracker.info.port
> tasktracker.http.port
> {noformat}
> and changed the following configuration parameters:
> {noformat}
> dfs.secondary.info.bindAddress
> dfs.datanode.bindAddress
> dfs.info.bindAddress
> mapred.job.tracker.info.bindAddress
> mapred.task.tracker.report.bindAddress
> tasktracker.http.bindAddress
> {noformat}
> without a backward-compatibility story.
> Lots are applications/cluster-configurations are prone to fail hence, we need 
> a way to keep things working as-is for 0.16.0 and remove them for 0.17.0.

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