[PIG-3753] LOGenerate generates null schema

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.1, 0.13.0
• Component/s: impl
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 07/Feb/14 17:45
• Updated: 15/Apr/14 20:45
• Resolved: 08/Feb/14 18:24

Description

In PIG-3627, we discover flatten(STRSPLIT) generate null schema.
Here is the sample:

a = load 'a' as (line:chararray);
b = foreach a generate flatten(STRSPLIT(line)) as (i0, i1, i2);
describe b;

b: {i0: NULL,i1: NULL,i2: NULL}

PIG-3627 fixed the JsonStorage to deal with null schema. In this ticket, we will fix the null schema generation.