taiyinglee created HBASE-20509:
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Summary: putting List in HashSet directly without using addAll
function to improve performance
Key: HBASE-20509
URL: https://issues.apache.org/jira/browse/HBASE-20509
Project: HBase
Issue Type: Improvement
Affects Versions: 3.0.0
Reporter: taiyinglee
[https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html]
change
Set<ServerName> serverSet = new HashSet<>();
serverSet.addAll(serverList);
to
Set<ServerName> serverSet = new HashSet<>(serverList);
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