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https://issues.apache.org/jira/browse/HDFS-17534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17852224#comment-17852224
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ASF GitHub Bot commented on HDFS-17534:
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slfan1989 commented on PR #6861:
URL: https://github.com/apache/hadoop/pull/6861#issuecomment-2148603781
@yuanboliu Thanks for the contribution! I believe all subclusters should be
equivalent. Why should we let a particular subcluster bear more read/write
load?
This is based on my personal experience, so it may not be entirely accurate.
We opted for RBF because a particular NN had an excessive load, leading us to
need to split the namespace. The concept proposed in this PR feels somewhat
different from our previous intuition.
> RBF: Support leader follower mode for multiple subclusters
> ----------------------------------------------------------
>
> Key: HDFS-17534
> URL: https://issues.apache.org/jira/browse/HDFS-17534
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Reporter: Yuanbo Liu
> Assignee: Yuanbo Liu
> Priority: Major
> Labels: pull-request-available
>
> Currently there are five modes in multiple subclusters like
> HASH, LOCAL, RANDOM, HASH_ALL,SPACE;
> Proposal a new mode called leader/follower mode. routers try to write to
> leader subcluster as many as possible. When routers read data, put leader
> subcluster into first rank.
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