Haohui Mai created HDFS-5548:
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Summary: Use ConcurrentHashMap in portmap
Key: HDFS-5548
URL: https://issues.apache.org/jira/browse/HDFS-5548
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Haohui Mai
Assignee: Haohui Mai
Attachments: HDFS-5548.000.patch
Portmap uses a HashMap to store the port mapping. It synchronizes the access of
the hash map by locking itself. It can be simplified by using a
ConcurrentHashMap.
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