Felix N created HDFS-17529:
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Summary: Improve router state store cache update
Key: HDFS-17529
URL: https://issues.apache.org/jira/browse/HDFS-17529
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs, rbf
Reporter: Felix N
Assignee: Felix N
Current implementation for router state store update is quite inefficient, so
much that when routers are removed and a lot of NameNodeMembership records are
deleted in a short burst, the deletions triggered a router safemode in our
cluster and caused a lot of troubles.
This ticket contains 2 parts: improving the deletion process for ZK state store
implementation, and allowing the overwrite part and delete part of
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