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https://issues.apache.org/jira/browse/HDFS-13098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16475016#comment-16475016
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Íñigo Goiri commented on HDFS-13098:
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I've already given my high level point of view in HDFS-12615 so I'll focus here
on the DN vs Router part.
So far this is just discussion, I'm not even sure there is a real interest for
this feature (this has been sitting for 4 months already).
My latest thought was to start pitch this idea during the summit, gather
feedback and start from there.
Once we have a more clear path we should make this an umbrella (and potentially
a branch).
> RBF: Datanodes interacting with Routers
> ---------------------------------------
>
> Key: HDFS-13098
> URL: https://issues.apache.org/jira/browse/HDFS-13098
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Íñigo Goiri
> Priority: Major
>
> Datanodes talk to particular Namenodes. We could use the Router
> infrastructure for the Datanodes to register/heartbeating into them and the
> Routers would forward this to particular Namenodes. This would make the
> assignment of Datanodes to subclusters potentially more dynamic.
> The implementation would potentially include:
> * Router to implement part of DatanodeProtocol
> * Forwarding DN messages into Routers
> * Policies to assign datanodes to subclusters
> * Datanodes to make blockpool configuration dynamic
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