Rahul Challapalli created DRILL-2844:
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Summary: Flatten & order by on an inner query and outer query
results in an IllegalStateException
Key: DRILL-2844
URL: https://issues.apache.org/jira/browse/DRILL-2844
Project: Apache Drill
Issue Type: Bug
Components: Execution - Relational Operators
Reporter: Rahul Challapalli
Assignee: Mehant Baid
git.commit.id.abbrev=5cd36c5
The below query fails :
{code}
select s1.type type, flatten(s1.rms.rptd) rptds from (select d.type type, d.uid
uid, flatten(d.map.rm) rms from `data.json` d order by d.uid) s1 order by
s1.rms.mapid;
+------------+------------+
| type | rptds |
+------------+------------+
Query failed: SYSTEM ERROR: Failure while reading vector. Expected vector
class of org.apache.drill.exec.vector.NullableIntVector but was holding vector
class org.apache.drill.exec.vector.NullableVarCharVector.
Fragment 0:0
[0dc08a63-bf6e-4d68-b77d-b9d485110990 on qa-node190.qa.lab:31010]
java.lang.RuntimeException: java.sql.SQLException: Failure while executing
query.
at sqlline.SqlLine$IncrementalRows.hasNext(SqlLine.java:2514)
at sqlline.SqlLine$TableOutputFormat.print(SqlLine.java:2148)
at sqlline.SqlLine.print(SqlLine.java:1809)
at sqlline.SqlLine$Commands.execute(SqlLine.java:3766)
at sqlline.SqlLine$Commands.sql(SqlLine.java:3663)
at sqlline.SqlLine.dispatch(SqlLine.java:889)
at sqlline.SqlLine.begin(SqlLine.java:763)
at sqlline.SqlLine.start(SqlLine.java:498)
at sqlline.SqlLine.main(SqlLine.java:460)
{code}
The below variations work :
{code}
1. Get rid of outer flatten : select s1.type type from (select d.type type,
d.uid uid, flatten(d.map.rm) rms from `data.json` d order by d.uid) s1 order by
s1.rms.mapid;
2. Get rid of the outer order by : select s1.type type, flatten(s1.rms.rptd)
rptds from (select d.type type, d.uid uid, flatten(d.map.rm) rms from
`data.json` d order by d.uid) s1;
3. Get rid of the inner order by : select s1.type type, flatten(s1.rms.rptd)
rptds from (select d.type type, d.uid uid, flatten(d.map.rm) rms from
`data.json` d) s1 order by s1.rms.mapid;
{code}
I attached the log file and data file. Let me know if you have any questions
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