JiangHua Zhu created HDFS-16650:
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Summary: Optimize the cost of obtaining timestamps in Centralized
cache management
Key: HDFS-16650
URL: https://issues.apache.org/jira/browse/HDFS-16650
Project: Hadoop HDFS
Issue Type: Improvement
Components: caching
Reporter: JiangHua Zhu
Fix For: 2.9.2
Getting timestamps in Centralized cache management is done in the following
ways:
long now = new Date().getTime();
This approach doesn't seem to be optimal since we only use it once here.
It might be better to use the tool Time to get the timestamp. E.g:
long now = Time.now();
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