[jira] [Created] (HDFS-8967) Create a BlockManagerLock class to represent the lock used in the BlockManager

[Haohui Mai (JIRA)]

Haohui Mai created HDFS-8967:
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             Summary: Create a BlockManagerLock class to represent the lock 
used in the BlockManager
                 Key: HDFS-8967
                 URL: https://issues.apache.org/jira/browse/HDFS-8967
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Haohui Mai
            Assignee: Haohui Mai


This jira proposes to create a {{BlockManagerLock}} class to represent the lock 
used in {{BlockManager}}.

Currently it directly points to the {{FSNamesystem}} lock thus there are no 
functionality changes.



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