[DRILL-2217] Trying to flatten an empty list should return an empty result

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.10.0
• Component/s: Execution - Relational Operators
• Assignee: Unassigned
• Reporter: Rahul Kumar Challapalli
• Created: 11/Feb/15 21:59
• Updated: 03/Apr/17 18:03
• Resolved: 03/Apr/17 18:03

Description

git.commit.id.abbrev=3d863b5

Data Set :

{"empty":[[],[[]]]}

Query :

select flatten(empty) from `data1.json`;
Query failed: RemoteRpcException: Failure while running fragment.[ 1b3123d9-92bc-45d5-bef8-b5f1be9def07 on qa-node191.qa.lab:31010 ]
[ 1b3123d9-92bc-45d5-bef8-b5f1be9def07 on qa-node191.qa.lab:31010 ]

I also attached the error from the logs

Issue Links

• is duplicated by: DRILL-2256 Flatten on an empty list fails.
• is related to: DRILL-3562 Query fails when using flatten on JSON data where some documents have an empty array
• relates to: DRILL-2754 Allocation bug in splitAndTransfer method causing some flatten queries to fail