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https://issues.apache.org/jira/browse/KYLIN-2557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16000149#comment-16000149
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peng.jianhua commented on KYLIN-2557:
-------------------------------------
[~liyang.g...@gmail.com], Ok, thanks.
> The kylin will start failed because of creating HBase table confict when
> multiple instances of the kylin are started at the same time.
> --------------------------------------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-2557
> URL: https://issues.apache.org/jira/browse/KYLIN-2557
> Project: Kylin
> Issue Type: Bug
> Components: Storage - HBase
> Affects Versions: v2.0.0
> Reporter: peng.jianhua
> Assignee: peng.jianhua
> Priority: Critical
> Labels: patch
> Attachments: 0001-KYLIN-2557-The-kylin-will-start-failed.patch
>
>
> Muliple instances were started at the same time after we installed the kylin.
> A conflict will occurs because these instances create kylin_metadata_acl
> table at the same time. The result is that the kylin start failed. The error
> log is as following:
> Caused by: org.apache.hadoop.hbase.TableExistsException: kylin_metadata_acl
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> at
> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
> at
> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95)
> at
> org.apache.hadoop.hbase.util.ForeignExceptionUtil.toIOException(ForeignExceptionUtil.java:45)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin$ProcedureFuture.convertResult(HBaseAdmin.java:4448)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin$ProcedureFuture.waitProcedureResult(HBaseAdmin.java:4406)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin$ProcedureFuture.get(HBaseAdmin.java:4339)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:674)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:604)
> at
> org.apache.kylin.storage.hbase.HBaseConnection.createHTableIfNeeded(HBaseConnection.java:307)
> at
> org.apache.kylin.storage.hbase.HBaseConnection.createHTableIfNeeded(HBaseConnection.java:262)
> at
> org.apache.kylin.rest.security.RealAclHBaseStorage.prepareHBaseTable(RealAclHBaseStorage.java:50)
> at
> org.apache.kylin.rest.security.MockAclHBaseStorage.prepareHBaseTable(MockAclHBaseStorage.java:53)
> at org.apache.kylin.rest.service.AclService.init(AclService.java:121)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:344)
> at
> org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:295)
> at
> org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:130)
> ... 125 more
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