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https://issues.apache.org/jira/browse/HADOOP-2404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12551673
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Konstantin Shvachko commented on HADOOP-2404:
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May be should just declare that this change is incompatible and not provide any
conversion of the changed parameters at all.
We cannot provide true compatibility. Whoever relied on the default port usage
expecting (consciously or unconsciously) them
to be rolled if they have are busy, would have to explicitly specify 0-ports.
This means the configuration should be changed,
so users might change the names as well.
> instead of directly reading "dfs.http.bindAddress", add a package-private
> static method getHttpBindAddress(Configuration)
+1 I really hate that we keep using raw names rather than providing
getters/setters/
This should be done for all configuration parameters imo, and probably belongs
to HADOOP-2385.
> HADOOP-2185 breaks compatibility with hadoop-0.15.0
> ---------------------------------------------------
>
> Key: HADOOP-2404
> URL: https://issues.apache.org/jira/browse/HADOOP-2404
> Project: Hadoop
> Issue Type: Bug
> Components: conf
> Affects Versions: 0.16.0
> Reporter: Arun C Murthy
> Assignee: Konstantin Shvachko
> Priority: Blocker
> Fix For: 0.16.0
>
> Attachments: 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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