RBF does support observer reads, it was added as part of https://issues.apache.org/jira/browse/HDFS-16767
you need to go through it, there are different configs and stuff you might need to setup to get RBF & Observer NN work together. -Ayush On Fri, 26 Jan 2024 at 13:44, 尉雁磊 <tre2...@163.com> wrote: > Can't observer namenode and Router-based Federation be used together? I at > the same time of using RBF > configuration > org.apache.hadoop.hdfs.server.namenode.ha.ObserverReadProxyProvider,but > complains >