huaxiang sun created HBASE-16272:
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Summary: Overflow in ServerName's compareTo method
Key: HBASE-16272
URL: https://issues.apache.org/jira/browse/HBASE-16272
Project: HBase
Issue Type: Bug
Components: hbase
Reporter: huaxiang sun
Assignee: huaxiang sun
Looking at the ServerName's compareTo(),
https://github.com/apache/hbase/blob/master/hbase-common/src/main/java/org/apache/hadoop/hbase/ServerName.java#L303
It converts the return int value by converting long to int like
(int)(longValue), which could be incorrect when it overflows, need to replace
it with Long.compareTo(a,b).
[~mbertozzi] found some others as well, such as
https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java#L990
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