xuzq created HDFS-15238:
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Summary: RBF：NamenodeHeartbeatService caused memory to grow rapidly
Key: HDFS-15238
URL: https://issues.apache.org/jira/browse/HDFS-15238
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: xuzq
Assignee: xuzq
NamenodeHeartbeatService will get NameNode's HA status every 5s, and created
HAServiceProtocol every time.
When creating HAServiceProtocol, it also will new Configuration.
Over time, there will be more and more entries for REGISTER in Configuration
until fullGc happen.
The entry will piles up again, after reaching a certain threshold, the fullGc
is triggered again.
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