Simbarashe Dzinamarira created HDFS-17514:
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Summary: RBF: Routers keep using cached stateID even when active
NN returns unset header
Key: HDFS-17514
URL: https://issues.apache.org/jira/browse/HDFS-17514
Project: Hadoop HDFS
Issue Type: Improvement
Components: rbf
Reporter: Simbarashe Dzinamarira
Assignee: Simbarashe Dzinamarira
When a namenode that had "dfs.namenode.state.context.enabled" set to true is
restart with the configuration set to false, router will keep using a
previously cached state ID.
Without RBF
* client that fetched the old stateID could have stale reads even after msyncing
* new clients will go to activate
With RBF
* client that fetched the old stateID could have stale reads as above.
* New clients will also fetch the stale stateID
We need clients that are created after the restart to not fetch the stale stale
ID.
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