Arturo Bernal created HDFS-15786:
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Summary: Minor improvement use isEmpty
Key: HDFS-15786
URL: https://issues.apache.org/jira/browse/HDFS-15786
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Arturo Bernal
Use isEmpty instead size() > o.
{{size()}} can be *O(1)* or *O(N)*, depending on the {{data structure}};
{{.isEmpty()}} is never *O(N)*.
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