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From "Saurabh Nigam (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-4425) Handle blank column names in Hbase in CONVERT_FROM
Date Tue, 23 Feb 2016 16:24:18 GMT
Saurabh Nigam created DRILL-4425:

             Summary: Handle blank column names in Hbase in CONVERT_FROM
                 Key: DRILL-4425
                 URL: https://issues.apache.org/jira/browse/DRILL-4425
             Project: Apache Drill
          Issue Type: New Feature
          Components: Storage - HBase
    Affects Versions: 1.3.0
         Environment: Apache Drill 1.3 on HortonWorks HDP VM 2.1
            Reporter: Saurabh Nigam
            Priority: Critical

Hbase table may contain blank column names & blank column family names. Drill needs to
handle such situation.

I faced the issue when I had a column with blank column name in my Hbase Table. To reproduce
it :
-Create a column without any name in Hbase
-Try to access it via Drill console
-Try to use CONVERT_FROM function to convert that data from Base64 encoding to make it readable.
You wont be able to convert blank column because you cannot use blank in your query after
a dot.

Something like  this
SELECT CONVERT_FROM(students. , 'UTF8') AS zipcode 
 FROM students;
Where column name is blank

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