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From "Francis Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9510) Namespace operations should throw clean exceptions
Date Mon, 16 Sep 2013 03:37:53 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13768039#comment-13768039
] 

Francis Liu commented on HBASE-9510:
------------------------------------

Patch needs a rebase. Looked through it looks good. One thing tho, what do you think of having
the PB api throw the NotFound exception for getNS() but MasterServices.getNS() return null?


                
> Namespace operations should throw clean exceptions
> --------------------------------------------------
>
>                 Key: HBASE-9510
>                 URL: https://issues.apache.org/jira/browse/HBASE-9510
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 0.98.0, 0.96.0
>
>         Attachments: hbase-9510_v1.patch, hbase-9510_v2.patch, hbase-9510_v3.patch
>
>
> Some of the namespace operations does not throw clean exceptions mimicking table exceptions
(TableNotFoundException, etc). 
> For example:
> {code}
> hbase(main):007:0> describe_namespace 'non_existing_namespace'
> ERROR: java.io.IOException
> 	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
> 	at org.apache.hadoop.hbase.ipc.RpcServer$CallRunner.run(RpcServer.java:1816)
> 	at org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.consumerLoop(SimpleRpcScheduler.java:165)
> 	at org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.access$0(SimpleRpcScheduler.java:161)
> 	at org.apache.hadoop.hbase.ipc.SimpleRpcScheduler$1.run(SimpleRpcScheduler.java:113)
> 	at java.lang.Thread.run(Thread.java:680)
> Caused by: java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.protobuf.ProtobufUtil.toProtoNamespaceDescriptor(ProtobufUtil.java:2138)
> 	at org.apache.hadoop.hbase.master.HMaster.getNamespaceDescriptor(HMaster.java:3029)
> 	at org.apache.hadoop.hbase.protobuf.generated.MasterAdminProtos$MasterAdminService$2.callBlockingMethod(MasterAdminProtos.java:32904)
> 	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2079)
> 	... 5 more
> {code}
> We can clean up the exceptions thrown from ns commands. 

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