He Xiaoqiao created HDFS-14702:
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Summary: Datanode.ReplicaMap memory leak
Key: HDFS-14702
URL: https://issues.apache.org/jira/browse/HDFS-14702
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 2.7.1
Reporter: He Xiaoqiao
DataNode memory is occupied by ReplicaMaps and cause GC high frequency then
write performance degrade.
It is about 600K block replicas located at DataNode, but when dump heap, there
are over 8M items of ReplicaMaps and footprint over 500MB. It seems that memory
leak. One more situation, the block w/r ops is very high.
Do not test HDFS-8859 and no idea if it can solve this issue.
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