[DRILL-2206] Error message must be updated when querying a JSON file with arrays in first level

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Fix Version/s: Future
• Component/s: Storage - JSON
• Assignee: Unassigned
• Reporter: Abhishek Girish
• Created: 11/Feb/15 01:00
• Updated: 01/Oct/15 16:38

Description

Structure of the file:

[
  {
    "key": "value",
    ...
  },
  {
   ...
  }
]

Valid Error Message:

> select * from `file.json`;
Query failed: Query stopped., Drill doesn't support objects whose first level is a scalar or array.  Objects must start as maps. [ 1dc6dfc2-77ed-4a22-8ef0-e5a31c24f6fb on abhi8.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)

Error message to be updated:

> select count(*) from `file.json`;
+------------+
|   EXPR$0   |
+------------+
Query failed: RemoteRpcException: Failure while running fragment., You tried to do a batch data read operation when you were in a state of STOP.  You can only do this type of operation when you are in a state of OK or OK_NEW_SCHEMA. [ 08135c32-fbb8-445e-8c0e-05292e6613e2 on abhi8.qa.lab:31010 ]
[ 08135c32-fbb8-445e-8c0e-05292e6613e2 on abhi8.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)

Issue Links

• Is contained by: DRILL-2476 Handle IterOutcome.STOP in buildSchema()
• is related to: DRILL-1891 Error message does not get propagated correctly when reading from JSON file
• relates to: DRILL-1755 Add support for arrays and scalars as first level elements in JSON files