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https://issues.apache.org/jira/browse/DRILL-5704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sorabh Hamirwasia updated DRILL-5704:
-------------------------------------
    Fix Version/s: 1.12.0

> Improve error message on client side when queries fail with "Failed to create 
> schema tree." when Impersonation is enabled and logins are anonymous
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-5704
>                 URL: https://issues.apache.org/jira/browse/DRILL-5704
>             Project: Apache Drill
>          Issue Type: Improvement
>            Reporter: Sorabh Hamirwasia
>             Fix For: 1.12.0
>
>
> Reported by [~agirish]
> When username is not specified then Drill set's the session user as anonymous 
> if impersonation is enabled. During query execution Drill tries to build 
> schema tree and as part of that it validates if the user has access to the 
> workspace or not by using FileClient Api liststatus which verifies the user 
> from the OS user. Since impersonation is only enabled here without 
> authentication and we don't specify any user in connection string, Drill will 
> use default user which is "anonymous" and pass that to check workspace 
> permission which will fail as node doesn't have any valid user with that name.
> {code:java}
> Caused by: java.io.IOException: Error getting user info for current user, 
> anonymous
>        ......
>        ......
>         at 
> org.apache.drill.exec.store.dfs.DrillFileSystem.listStatus(DrillFileSystem.java:523)
>  ~[drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.store.dfs.WorkspaceSchemaFactory.accessible(WorkspaceSchemaFactory.java:157)
>  ~[drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.store.dfs.FileSystemSchemaFactory$FileSystemSchema.<init>(FileSystemSchemaFactory.java:78)
>  ~[drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.store.dfs.FileSystemSchemaFactory.registerSchemas(FileSystemSchemaFactory.java:65)
>  ~[drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.store.dfs.FileSystemPlugin.registerSchemas(FileSystemPlugin.java:150)
>  ~[drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.store.StoragePluginRegistryImpl$DrillSchemaFactory.registerSchemas(StoragePluginRegistryImpl.java:365)
>  ~[drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.store.SchemaTreeProvider.createRootSchema(SchemaTreeProvider.java:72)
>  [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
>         ... 10 common frames omitted
> {code}



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