Amir Langer created HDFS-5733:
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Summary: Separate concurrency control between BM and NN
Key: HDFS-5733
URL: https://issues.apache.org/jira/browse/HDFS-5733
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Amir Langer
Replace usage of the namesystem locking mechanism by the BM with its own
concurrency control to control its own internal state.
Both NN and BM will still run from the same VM.
This task should maintain backward compatibility.
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