Jim Brennan created HDFS-15789:
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Summary: Lease renewal does not require namesystem lock
Key: HDFS-15789
URL: https://issues.apache.org/jira/browse/HDFS-15789
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs
Affects Versions: 3.4.0
Reporter: Jim Brennan
Assignee: Jim Brennan
[~daryn] found this while testing the performance for HDFS-15704.
The lease manager is independent of the namesystem. Acquiring the lock causes
unnecessary lock contention that degrades throughput.
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