Simbarashe Dzinamarira created HDFS-17111:
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Summary: 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
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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