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https://issues.apache.org/jira/browse/HDFS-17111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17744750#comment-17744750
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ASF GitHub Bot commented on HDFS-17111:
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simbadzina opened a new pull request, #5860:
URL: https://github.com/apache/hadoop/pull/5860
HDFS-17111. RBF: Optimize msync to only call nameservices with observer
namenodes.
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### Description of PR
Routers only need to msync to nameservices that have CRS configured.
I'm still considering whether to just use a static configuration instead of
trying to automatically identity the nameservices to msync to.
### How was this patch tested?
New unit test.
### For code changes:
- [ X] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
> RBF: Optimize msync to only call nameservices with observer namenodes.
> ----------------------------------------------------------------------
>
> Key: HDFS-17111
> URL: https://issues.apache.org/jira/browse/HDFS-17111
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Simbarashe Dzinamarira
> Assignee: Simbarashe Dzinamarira
> Priority: Major
>
> Right now when a client MSYNCs to the router, the call is fanned out to all
> nameservices. We only need to proxy the msync to nameservices that have
> observer reads configured.
> We can do this either by adding a new config for the admin to specify which
> nameservices have CRS configured, or we can try to automatically detect these.
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