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https://issues.apache.org/jira/browse/HBASE-9421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Yu reassigned HBASE-9421:
-----------------------------
Assignee: Ted Yu
> Provide better error message when dropping non-existent namespace
> -----------------------------------------------------------------
>
> Key: HBASE-9421
> URL: https://issues.apache.org/jira/browse/HBASE-9421
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: Ted Yu
> Priority: Minor
>
> If a non-existent namespace is dropped, FileNotFoundException is thrown.
> There should be better error message like "namespace does not exist"
> {code}
> hbase(main):002:0> drop_namespace 'hi'
> ERROR: java.io.FileNotFoundException: File
> hdfs://h.com:8020/apps/hbase/data/data/hi does not exist.
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:656)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:92)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:714)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:710)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:78)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:710)
> at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1478)
> at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1518)
> at
> org.apache.hadoop.hbase.util.FSUtils.getLocalTableDirs(FSUtils.java:1316)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.getByNamespace(FSTableDescriptors.java:222)
> at
> org.apache.hadoop.hbase.master.HMaster.listTableDescriptorsByNamespace(HMaster.java:3121)
> at
> org.apache.hadoop.hbase.master.TableNamespaceManager.remove(TableNamespaceManager.java:158)
> at
> org.apache.hadoop.hbase.master.HMaster.deleteNamespace(HMaster.java:3106)
> at
> org.apache.hadoop.hbase.master.HMaster.deleteNamespace(HMaster.java:3000)
> at
> org.apache.hadoop.hbase.protobuf.generated.MasterAdminProtos$MasterAdminService$2.callBlockingMethod(MasterAdminProtos.java:32902)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2147)
> at
> org.apache.hadoop.hbase.ipc.RpcServer$Handler.run(RpcServer.java:1854)
> Here is some help for this command:
> Drop the named namespace. The namespace must be empty.
> {code}
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