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https://issues.apache.org/jira/browse/HDFS-13522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17571186#comment-17571186
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zhengchenyu edited comment on HDFS-13522 at 7/26/22 4:16 AM:
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[~simbadzina]
In your v2 document, maybe no detailed implement and structure. I still don't
know how to implement in your design. What's you choice about design A and
design B? (Note: The last picture is not clear in google document.)
In my design, key is nameserviceId in router mode, key is clientid+callid in
cilent mode. In my proposal, mainly describe client mode. About switches
between routers, there is no problem in my proposal in client mode. because
client carry real state id.
I think we need more discuss about this. I create a channel named ''hdfs-13522"
on slack. Let us discuss on this channel for more efficient communication, and
continue to meeting. [~simbadzina] [~xuzq_zander]
was (Author: zhengchenyu):
[~simbadzina]
In your v2 document, maybe no detailed implement and structure. I still don't
know how to implement in your design. (Note: The last picture is not clear in
google document.)
In my design, key is nameserviceId in router mode, key is clientid+callid in
cilent mode. In my proposal, mainly describe client mode. About switches
between routers, there is no problem in my proposal in client mode. because
client carry real state id.
I think we need more discuss about this. I create a channel named ''hdfs-13522"
on slack. Let us discuss on this channel for more efficient communication, and
continue to meeting. [~simbadzina] [~xuzq_zander]
> RBF: Support observer node from Router-Based Federation
> -------------------------------------------------------
>
> Key: HDFS-13522
> URL: https://issues.apache.org/jira/browse/HDFS-13522
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: federation, namenode
> Reporter: Erik Krogen
> Assignee: Simbarashe Dzinamarira
> Priority: Major
> Labels: pull-request-available
> Attachments: HDFS-13522.001.patch, HDFS-13522.002.patch,
> HDFS-13522_WIP.patch, HDFS-13522_proposal_zhengchenyu_v1.pdf, RBF_ Observer
> support.pdf, Router+Observer RPC clogging.png,
> ShortTerm-Routers+Observer.png,
> observer_reads_in_rbf_proposal_simbadzina_v1.pdf,
> observer_reads_in_rbf_proposal_simbadzina_v2.pdf
>
> Time Spent: 20h
> Remaining Estimate: 0h
>
> Changes will need to occur to the router to support the new observer node.
> One such change will be to make the router understand the observer state,
> e.g. {{FederationNamenodeServiceState}}.
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