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From "Qiang Tian (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-11146) HMaster instantiates both MasterCoprocessorHost and RegionServerCoprocessorHost
Date Sat, 10 May 2014 21:55:25 GMT
Qiang Tian created HBASE-11146:
----------------------------------

             Summary: 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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