msamirkhan opened a new pull request #3961:
URL: https://github.com/apache/hbase/pull/3961


   MajorCompactor creates excessive connections: once every time 
MajorCompactionRequest.getConnection is called. Can do better by using the 
Connection object created in MajorCompactor.
   
   **Testing:**
   Ran `mvn -D 
test="org.apache.hadoop.hbase.util.compaction.TestMajorCompactor" test -pl 
hbase-server -am`
   Before:
   ```
   % grep 'ipc.RpcConnection' 
hbase-server/target/surefire-reports/org.apache.hadoop.hbase.util.compaction.TestMajorCompactor-output.txt
 | grep -c 'ClientMeta'
   17
   ```
   After:
   ```
   % grep 'ipc.RpcConnection' 
hbase-server/target/surefire-reports/org.apache.hadoop.hbase.util.compaction.TestMajorCompactor-output.txt
 | grep -c 'ClientMeta'
   2
   ```


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