[jira] [Created] (DRILL-1026) Tableau generated metadata query does not return metadata for multi-region HBase table

["Xiao Meng (JIRA)" <ji...@apache.org>]

Xiao Meng created DRILL-1026:
--------------------------------

             Summary: Tableau generated metadata query does not return metadata for  multi-region HBase table
                 Key: DRILL-1026
                 URL: https://issues.apache.org/jira/browse/DRILL-1026
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Xiao Meng


Observed from the driver's log, when running the following custom SQL
{code}
select 
cast(row_key as integer) voter_id,
cast(onecf['name'] as varchar(30)) name,
cast(twocf['age'] as integer) age, 
cast(twocf['registration'] as varchar(20)) registration, 
cast(threecf['contributions'] as decimal(6,2)) contributions, cast(threecf['voterzone'] as integer) voterzone,
cast(fourcf['create_date'] as timestamp) create_date from hbase.voter
{code}

Tableau will generate the following query
{code}
SELECT *
FROM (
  select cast(row_key as integer) voter_id,cast(onecf['name'] as varchar(30)) name,cast(twocf['age'] as integer) age, cast(twocf['registration'] as varchar(20)) registration, cast(threecf['contributions'] as decimal(6,2)) contributions, cast(threecf['voterzone'] as integer) voterzone,cast(fourcf['create_date'] as timestamp) create_date from hbase.voter
) `TableauSQL`
WHERE (0 = 1)
{code}

In the case of HBase table resident in one region, it will return expected metadata.
But in the case of multi-region HBase table, it will return no metadata.



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