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https://issues.apache.org/jira/browse/HADOOP-15774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16621558#comment-16621558
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Yiqun Lin commented on HADOOP-15774:
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This looks very interesting! I did a quick look for the design doc, some
aspects I am concerning and maybe described more in the doc:
* Once server addresses are updated, how sever manager plan to do and lets
works known?
* For the workers, do they need to get server address every time when they ask
for a request for servers? Or they will just get the address once and cached
the it in itself?
> Discovery of HA servers
> -----------------------
>
> Key: HADOOP-15774
> URL: https://issues.apache.org/jira/browse/HADOOP-15774
> Project: Hadoop Common
> Issue Type: New Feature
> Reporter: Íñigo Goiri
> Priority: Major
> Attachments: Discovery Service.pdf
>
>
> Currently, Hadoop relies on configuration files to specify the servers.
> This requires maintaining these configuration files and propagating the
> changes.
> Hadoop should have a framework to provide discovery.
> For example, in HDFS, we could define the Namenodes in a shared location and
> the DNs would use the framework to find the Namenodes.
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