Pig can't reference auto-generated schema name for TOTUPLE
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Key: PIG-2050
URL: https://issues.apache.org/jira/browse/PIG-2050
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.8.0, 0.9.0
Reporter: Richard Ding
Priority: Minor
Here is the use case:
{code}
grunt> A = load 'data' as (a0, a1, a2);
grunt> B = foreach A generate TOTUPLE(a0, a2);
grunt> describe B
B: {org.apache.pig.builtin.totuple_a0_3: (a0: bytearray,a2: bytearray)}
grunt> C = foreach B generate org.apache.pig.builtin.totuple_a0_3;
2011-05-06 14:38:14,635 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
1000: Error during parsing. Invalid alias: org in
{org.apache.pig.builtin.totuple_a0_1: (a0: bytearray,a2: bytearray)}
{code}
The workaround is to specify a use-defined schema name:
{code}
grunt> A = load 'data' as (a0, a1, a2);
grunt> B = foreach A generate TOTUPLE(a0, a2) as aa;
grunt> describe B
B: {aa: (a0: bytearray,a2: bytearray)}
grunt> C = foreach B generate aa;
grunt>
{code}
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