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https://issues.apache.org/jira/browse/HDFS-13522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17764037#comment-17764037
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ASF GitHub Bot commented on HDFS-13522:
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LiuGuH commented on PR #4311:
URL: https://github.com/apache/hadoop/pull/4311#issuecomment-1715110949
The design doc
https://issues.apache.org/jira/secure/attachment/13047193/observer_reads_in_rbf_proposal_simbadzina_v2.pdf
is very helpful .
But the Third party communication(pdf) in the
observer_reads_in_rbf_proposal_simbadzina_v2.pdf is too blurry to read , and
the pdf link
https://drive.google.com/file/d/1851oaVeayiKKbNFSa93G5CS-bXXZY7BM/view?usp=sharing
is does not exist.
Can anyone put it againe？ Thanks very much
> HDFS-13522: Add federated nameservices states to client protocol and
> propagate it between routers and clients.
> --------------------------------------------------------------------------------------------------------------
>
> 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
> Fix For: 3.4.0
>
> Attachments: HDFS-13522.001.patch, HDFS-13522.002.patch,
> HDFS-13522_WIP.patch, 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 50m
> 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{}}}.
> This patch captures the state of all namespaces in the routers and propagates
> it to clients. A follow up patch will change router behavior to direct
> requests to the observer.
>
>
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