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https://issues.apache.org/jira/browse/HDFS-16589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17541239#comment-17541239
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Jackson Wang commented on HDFS-16589:
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[~elgoiri] yeah, i think so. it's modified on
[HDFS-13522|https://issues.apache.org/jira/browse/HDFS-13522].
the right way is to create a pull request involving that issue's commit?
> RBF: Support cluster level SBN read switch in Router-Based Federation
> ---------------------------------------------------------------------
>
> Key: HDFS-16589
> URL: https://issues.apache.org/jira/browse/HDFS-16589
> Project: Hadoop HDFS
> Issue Type: Task
> Components: rbf
> Reporter: Jackson Wang
> Priority: Major
> Attachments: HDFS-16589.patch
>
>
> it will add a cluster-level Observer read switch. it will determine which
> clusters support observer read and which do not.
> when multiple clusters need to be updated in sequence to support SBN, it
> requires a switch to control the range of supported cluster.
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