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From "Rahul Challapalli (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5534) convert_from on a json map with null value produces an NPE
Date Tue, 23 May 2017 17:33:04 GMT
Rahul Challapalli created DRILL-5534:
----------------------------------------

             Summary: convert_from on a json map with null value produces an NPE
                 Key: DRILL-5534
                 URL: https://issues.apache.org/jira/browse/DRILL-5534
             Project: Apache Drill
          Issue Type: Bug
          Components: Functions - Drill
    Affects Versions: 1.10.0
            Reporter: Rahul Challapalli


git.commit.id.abbrev=d11aba2

The below query fails with an NPE. Surprisingly there is information about the error in the
logs
{code}
0: jdbc:drill:zk=10.10.100.190:5181> select convert_from('{kpi : null}' ,'json') as kpi
from cp.`tpch/lineitem.parquet` limit 1;
Error: Unexpected RuntimeException: java.lang.NullPointerException (state=,code=0)
{code}

Adding one more column to the above query gets rid of the NPE
{code}
select '' as rk, convert_from('{kpi : null}' ,'json') as kpi from cp.`tpch/lineitem.parquet`
limit 1;
+-----+------+
| rk  | kpi  |
+-----+------+
|     | {}   |
+-----+------+
1 row selected (1.013 seconds)
{code}



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