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https://issues.apache.org/jira/browse/HBASE-7235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Enis Soztutar updated HBASE-7235:
---------------------------------
Resolution: Fixed
Fix Version/s: 0.94.4
0.96.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Committed this to trunk and 0.94. Thanks Stack for review.
> 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
> Fix For: 0.96.0, 0.94.4
>
> Attachments: hbase-7235_v1.patch
>
>
> 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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