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https://issues.apache.org/jira/browse/HBASE-11146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Qiang Tian resolved HBASE-11146.
--------------------------------
Resolution: Won't Fix
work as design
> HMaster instantiates both MasterCoprocessorHost and
> RegionServerCoprocessorHost
> -------------------------------------------------------------------------------
>
> Key: HBASE-11146
> URL: https://issues.apache.org/jira/browse/HBASE-11146
> Project: HBase
> Issue Type: Bug
> Components: Coprocessors
> Affects Versions: 0.99.0
> Reporter: Qiang Tian
> Assignee: Qiang Tian
>
> See HBASE-11096.
> in 0.99, HRegionServer is the base class of HMaster.
> master and regionserver share the same run method, the master instantiates
> both MasterCoprocessorHost and RegionServerCoprocessorHost
> below is example logs, a coprocessor is start/stop twice--one is for real
> regionserver, the other is for the RegionServerCoprocessorHost in master.
> 2014-05-08 00:33:51,632 INFO [M:0;bdvm135:36021]
> coprocessor.TestCoprocessorStop$FooCoprocessor(66): st
> art coprocessor on regionserver
> 2014-05-08 00:33:51,633 INFO [RS:0;bdvm135:47513]
> coprocessor.TestCoprocessorStop$FooCoprocessor(66): s
> tart coprocessor on regionserver
> ...
> 2014-05-08 00:34:03,166 INFO [main] regionserver.HRegionServer(1624): call
> stack of stop
> java.io.IOException
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.stop(HRegionServer.java:1624)
> at
> org.apache.hadoop.hbase.master.ServerManager.shutdownCluster(ServerManager.java:975)
> at org.apache.hadoop.hbase.master.HMaster.shutdown(HMaster.java:1623)
> at
> org.apache.hadoop.hbase.util.JVMClusterUtil.shutdown(JVMClusterUtil.java:256)
> at
> org.apache.hadoop.hbase.LocalHBaseCluster.shutdown(LocalHBaseCluster.java:437)
> at
> org.apache.hadoop.hbase.MiniHBaseCluster.shutdown(MiniHBaseCluster.java:519)
> at
> org.apache.hadoop.hbase.coprocessor.TestCoprocessorStop.testStopped(TestCoprocessorStop.java:
> 114)
> ...
> 2014-05-08 00:34:03,215 INFO [main] regionserver.HRegionServer(1629): rsHost
> code path called
> 2014-05-08 00:34:03,228 DEBUG [main] coprocessor.CoprocessorHost(258): Stop
> coprocessor org.apache.hadoo
> p.hbase.coprocessor.TestCoprocessorStop$FooCoprocessor
> 2014-05-08 00:34:03,462 INFO [main]
> coprocessor.TestCoprocessorStop$FooCoprocessor(88): create file hdf
> s://localhost:8155/user/tianq/test-data/f0c9423c-e505-4feb-907e-c7bd6e16545b/regionserver1399534399680
> r
> eturn rc true
> ...
> 2014-05-08 00:34:03,482 INFO [main] regionserver.HRegionServer(1624): call
> stack of stop
> java.io.IOException
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.stop(HRegionServer.java:1624)
> at
> org.apache.hadoop.hbase.util.JVMClusterUtil.shutdown(JVMClusterUtil.java:264)
> at
> org.apache.hadoop.hbase.LocalHBaseCluster.shutdown(LocalHBaseCluster.java:437)
> at
> org.apache.hadoop.hbase.MiniHBaseCluster.shutdown(MiniHBaseCluster.java:519)
> at
> org.apache.hadoop.hbase.coprocessor.TestCoprocessorStop.testStopped(TestCoprocessorStop.java:
> 114)
> 2014-05-08 00:34:03,485 INFO [main] regionserver.HRegionServer(1629): rsHost
> code path called
> 2014-05-08 00:34:03,485 DEBUG [main] coprocessor.CoprocessorHost(258): Stop
> coprocessor org.apache.hadoo
> p.hbase.coprocessor.TestCoprocessorStop$FooCoprocessor
> 2014-05-08 00:34:03,493 INFO [main]
> coprocessor.TestCoprocessorStop$FooCoprocessor(88): create file hdf
> s://localhost:8155/user/tianq/test-data/f0c9423c-e505-4feb-907e-c7bd6e16545b/regionserver1399534399680
> r
> eturn rc false
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