[DRILL-7516] count(*) on empty JSON produce nothing

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.17.0
• Component/s: Storage - JSON
• Assignee: Unassigned
• Reporter: benj
• Created: 07/Jan/20 16:42
• Updated: 07/Jan/20 20:20

Description

With 2 files containing nothing

touch 0.csv
touch 0.json

the count( * ) doesn't produce the same result

apache drill> select count(*) from dfs.TEST.`0.json`;
+--------+
| EXPR$0 |
+--------+
+--------+
No rows selected (0.151 seconds)

apache drill> select count(*) from dfs.TEST.`0.csv`;
+--------+
| EXPR$0 |
+--------+
| 0      |
+--------+
1 row selected (0.415 seconds)

Issue Links

• is part of: DRILL-6953 Merge row set-based JSON reader
• relates to: DRILL-3776 count(*) from empty text file does not return 0