Enis Soztutar created HBASE-7235:
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Summary: TestMasterObserver is flaky
Key: HBASE-7235
URL: https://issues.apache.org/jira/browse/HBASE-7235
Project: HBase
Issue Type: Bug
Components: Coprocessors, master, test
Affects Versions: 0.96.0, 0.94.4
Reporter: Enis Soztutar
Assignee: Enis Soztutar
TestMasterObserver failed on windows builds at least a couple of times,
although this is not windows specific.
Upon further inspection, it seems that we are affected by the race condition
for the table operations.
The handling of modify table occurs in its dedicated executor,
MASTER_TABLE_OPERATIONS, and happens in async, although the handling of
add/delete/modify columns are handled in the IPC handler thread. When we do not
wait for the first modify table to finish, subsequent changes from the
add/modify column operations are overriden by the earlier modify table executor.
{code}
at
org.apache.hadoop.hbase.master.handler.TableEventHandler.hasColumnFamily(TableEventHandler.java:182)
at
org.apache.hadoop.hbase.master.handler.TableDeleteFamilyHandler.<init>(TableDeleteFamilyHandler.java:42)
at
org.apache.hadoop.hbase.master.HMaster.deleteColumn(HMaster.java:1255)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1400)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at
org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:96)
at
org.apache.hadoop.hbase.client.HBaseAdmin.deleteColumn(HBaseAdmin.java:1024)
at
org.apache.hadoop.hbase.coprocessor.TestMasterObserver.testTableOperations(TestMasterObserver.java:616)
{code}
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