[jira] [Commented] (HBASE-15147) Shell should use Admin.listTableNames() instead of Admin.listTables()

["Matteo Bertozzi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-15147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15109983#comment-15109983 ] 

Matteo Bertozzi commented on HBASE-15147:
-----------------------------------------

R can be on a single family, so we can't allow everyone to get the full HTD. maybe we can remove some info from the returned HTD if the user does not have A or C.

for the list command, I think using getTableNames() is good even without the ACL problem, since we just throw away the HTDs and use only the name.

> Shell should use Admin.listTableNames() instead of Admin.listTables() 
> ----------------------------------------------------------------------
>
>                 Key: HBASE-15147
>                 URL: https://issues.apache.org/jira/browse/HBASE-15147
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 2.0.0, 1.2.0, 1.3.0, 1.1.4
>
>
> It seems that getTableDescriptors() in master checks for A and C permissions while getTableNames() checks for any privilege on the table. The reasoning is explained here: https://issues.apache.org/jira/browse/HBASE-12564?focusedCommentId=14234504&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14234504 
> We should change the shell command for {{list}} to use the getTableNames() version because of this. Otherwise a user having only R or W cannot list the table name. 
> This has been reported from a user here: https://community.hortonworks.com/questions/10742/why-does-a-user-need-create-permission-for-list-co.html#comment-11000. 
> While we are at it, should we revisit the fact that you cannot get a table descriptor if you have only R or W? It seems strange that you cannot even know the CF names of a table that you can read from. I could not find info about the "describe" privileges on SQL databases. However, if there are use cases where Table descriptor might contain sensitive info, the current semantics seems fine. cc [~apurtell] and [~mbertozzi]. 



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