The open method of FSNamesystem should be synchronized
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Key: HADOOP-1205
URL: https://issues.apache.org/jira/browse/HADOOP-1205
Project: Hadoop
Issue Type: Bug
Components: dfs
Affects Versions: 0.12.2
Reporter: Hairong Kuang
Fix For: 0.13.0
Method open accesses a shared data structure blockMap. If synchronization
access is not enforced, open might return inconsistent results.
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