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From "Prasad Nagaraj Subramanya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5792) CONVERT_FROM_JSON on an empty file throws runtime exception
Date Thu, 14 Sep 2017 19:57:00 GMT
Prasad Nagaraj Subramanya created DRILL-5792:
------------------------------------------------

             Summary: CONVERT_FROM_JSON on an empty file throws runtime exception
                 Key: DRILL-5792
                 URL: https://issues.apache.org/jira/browse/DRILL-5792
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Prasad Nagaraj Subramanya


Sample query to reproduce-
{code}
SELECT CONVERT_FROM(columns[1], 'JSON') as col1 FROM dfs.`file1.tbl`;
{code}

Throws runtime exception-
{code}
Error: Unexpected RuntimeException: java.lang.UnsupportedOperationException: Unable to find
sql accessor for minor type [NULL] and mode [OPTIONAL] (state=,code=0)
{code}
The expected result is that the query returns 0 rows.

Issue observed with commit id - 7a900b71fd269aceee7301afb18fd8d303df5bcd

Expected result-
{code}
+-------+
| col1  |
+-------+
+-------+
{code}
Works with drill 1.11.0



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