[jira] [Created] (HBASE-20645) Fix security_available method in security.rb

["Ankit Singhal (JIRA)" <ji...@apache.org>]

Ankit Singhal created HBASE-20645:
-------------------------------------

             Summary: Fix security_available method in security.rb 
                 Key: HBASE-20645
                 URL: https://issues.apache.org/jira/browse/HBASE-20645
             Project: HBase
          Issue Type: Bug
    Affects Versions: 2.0.0
            Reporter: Ankit Singhal
            Assignee: Ankit Singhal
         Attachments: HBASE-20645.patch

"exists?" method expects parameter tableName to be String but ACL_TABLE_NAME is of org.apache.hadoop.hbase.TableName form.
{code}
raise(ArgumentError, 'DISABLED: Security features are not available') unless \
          exists?(org.apache.hadoop.hbase.security.access.AccessControlLists::ACL_TABLE_NAME.getNameAsString)
{code}

Impact of the bug:-
So , if a user is running any security related command(revoke,user_permission) and there is an exception(MasterNotRunning) while checking security capabilities, then instead of seeing the underlying exception, user is seeing 
{code}
ERROR: no method 'valueOf' for arguments (org.apache.hadoop.hbase.TableName) on Java::OrgApacheHadoopHbase::TableName
  available overloads:
    (java.lang.String)
    (byte[])
{code}





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