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Posted to hdfs-dev@hadoop.apache.org by "Haohui Mai (JIRA)" <ji...@apache.org> on 2013/11/21 22:17:35 UTC

[jira] [Created] (HDFS-5548) Use ConcurrentHashMap in portmap

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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