[HBASE-14455] Try to get rid of unused HConnection instance

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Hadoop Flags: Reviewed
• External issue URL: https://issues.apache.org/jira/browse/HBASE-14361
• Assignee: Heng Chen
• Reporter: Heng Chen
• Created: 21/Sep/15 09:13
• Updated: 01/Jul/22 21:35
• Resolved: 22/Sep/15 17:40

Description

After HBASE-14361, we get rid of HConnection Instance in ReplicationSink in standalone mode. But there are still three HConnection Instance, i think the unused ones should be removed.

The three instances are created below

    6 2015-09-21 16:05:36,401 INFO  [10.0.3.80:60429.activeMasterManager] client.ConnectionImplementation:.
    7 java.lang.Throwable
    8 >---at org.apache.hadoop.hbase.client.ConnectionImplementation.<init>(ConnectionImplementation.java:217)
    9 >---at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   10 >---at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
   11 >---at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
   12 >---at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
   13 >---at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:231)
   14 >---at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:118)
   15 >---at org.apache.hadoop.hbase.master.ServerManager.<init>(ServerManager.java:222)
   16 >---at org.apache.hadoop.hbase.master.ServerManager.<init>(ServerManager.java:212)
   17 >---at org.apache.hadoop.hbase.master.HMaster.createServerManager(HMaster.java:853)
   18 >---at org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:661)
   19 >---at org.apache.hadoop.hbase.master.HMaster.access$500(HMaster.java:180)
   20 >---at org.apache.hadoop.hbase.master.HMaster$1.run(HMaster.java:1670)
   21 >---at java.lang.Thread.run(Thread.java:745)
   22 2015-09-21 16:05:36,401 INFO  [M:0;10.0.3.80:60429] client.ConnectionImplementation:.
   23 java.lang.Throwable
   24 >---at org.apache.hadoop.hbase.client.ConnectionImplementation.<init>(ConnectionImplementation.java:217)
   25 >---at org.apache.hadoop.hbase.client.ConnectionUtils$1.<init>(ConnectionUtils.java:128)
   26 >---at org.apache.hadoop.hbase.client.ConnectionUtils.createShortCircuitConnection(ConnectionUtils.java:128)
   27 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.createClusterConnection(HRegionServer.java:686)
   28 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.setupClusterConnection(HRegionServer.java:717)
   29 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.preRegistrationInitialization(HRegionServer.java:730)
   30 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:885)
   31 >---at org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMaster.run(HMasterCommandLine.java:311)
   32 >---at java.lang.Thread.run(Thread.java:745)
   33 2015-09-21 16:05:36,401 INFO  [RS:0;10.0.3.80:60431] client.ConnectionImplementation:.
   34 java.lang.Throwable
   35 >---at org.apache.hadoop.hbase.client.ConnectionImplementation.<init>(ConnectionImplementation.java:217)
   36 >---at org.apache.hadoop.hbase.client.ConnectionUtils$1.<init>(ConnectionUtils.java:128)
   37 >---at org.apache.hadoop.hbase.client.ConnectionUtils.createShortCircuitConnection(ConnectionUtils.java:128)
   38 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.createClusterConnection(HRegionServer.java:686)
   39 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.setupClusterConnection(HRegionServer.java:717)
   40 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.preRegistrationInitialization(HRegionServer.java:730)
   41 >---at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:885)
   42 >---at java.lang.Thread.run(Thread.java:745)

Issue Links

• is related to: HBASE-14361 ReplicationSink should create Connection instances lazily