[HBASE-20737] put collection into ArrayList instead of addAll function

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-1
• Fix Version/s: 3.0.0-alpha-1, 2.1.0
• Hadoop Flags: Reviewed
• Assignee: taiyinglee
• Reporter: taiyinglee
• Created: 15/Jun/18 07:15
• Updated: 21/Jun/18 02:52
• Resolved: 20/Jun/18 06:50

Description

https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html

https://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html

https://docs.oracle.com/javase/7/docs/api/java/util/Set.html

 

/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterStatusPublisher.java

change

List<Map.Entry<ServerName, Integer>> entries = new ArrayList<>();
entries.addAll(lastSent.entrySet());

to

List<Map.Entry<ServerName, Integer>> entries = new ArrayList<>(lastSent.entrySet());