Federation: FSDataset volumeMap access is not correctly synchronized
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Key: HDFS-1717
URL: https://issues.apache.org/jira/browse/HDFS-1717
Project: Hadoop HDFS
Issue Type: Sub-task
Components: data-node
Affects Versions: Federation Branch
Reporter: Suresh Srinivas
Assignee: Suresh Srinivas
Fix For: Federation Branch
FSDataset volumeMap access has several issues:
# Access to it is not synchronized all the time, using FSDataset.this as lock,
as expected.
# It is synchronized using different locks.
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