Hao Zhu created DRILL-1741:
------------------------------
Summary: kvgen does not work with nested map/unions
Key: DRILL-1741
URL: https://issues.apache.org/jira/browse/DRILL-1741
Project: Apache Drill
Issue Type: Bug
Components: Functions - Drill
Affects Versions: 0.7.0
Reporter: Hao Zhu
Tested on latest 0.7.0.
kvgen function does not work well with nested maps/unions.
1. This works fine:
{code}
$ cat test_work.json
{
"data" : {
"col1" : "aaa"
}
}
{code}
{code}
0: jdbc:drill:zk=local> select kvgen(tab.data) from `test_work.json` tab;
+------------+
| EXPR$0 |
+------------+
| [{"key":"col1","value":"aaa"}] |
+------------+
1 row selected (0.034 seconds)
{code}
2. This failed:
{code}
$ cat test7.json
{
"data" : {
"col1" : {
"one" : "aaa"
}
}
}
{code}
{code}
0: jdbc:drill:zk=local> select kvgen(tab.data) from `test7.json` tab;
+------------+
| EXPR$0 |
+------------+
Query failed: Failure while running fragment., Mappify does not support input
of type: MAP [ d2bfea52-9935-4d63-8ecc-52315a3c7c7b on 10.250.0.115:31010 ]
java.lang.RuntimeException: java.sql.SQLException: Failure while executing
query.
at sqlline.SqlLine$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}
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