Akira Ajisaka created HDFS-15575:
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Summary: RBF: Create test cases that simulate general exceptions
on NameNodes
Key: HDFS-15575
URL: https://issues.apache.org/jira/browse/HDFS-15575
Project: Hadoop HDFS
Issue Type: Sub-task
Components: rbf
Reporter: Akira Ajisaka
Follow-up on HDFS-15555.
RouterRpcClient will refresh the active NameNode list when there is some
exception that is considered to be unavailable. It's better to have test cases
to verify this behavior:
* NameNode throws some exceptions
* Verify that the cache in the RouterRpcClient is refreshed
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