Deep cast of complex type
-------------------------
Key: PIG-1758
URL: https://issues.apache.org/jira/browse/PIG-1758
Project: Pig
Issue Type: New Feature
Components: impl
Affects Versions: 0.8.0
Reporter: Daniel Dai
Assignee: Daniel Dai
Fix For: 0.9.0
Pig does not handle deep cast from bag -> bag, tuple -> tuple. Eg, the
following script does not produce desired result:
{code}
a = load '1.txt' as (a0:bag{t:tuple(i0:double)});
b = foreach a generate (bag{tuple(int)})a0;
dump b;
{code}
The result tuple still contain int inside tuple of bag.
PIG-613 fix the case we cast bytearray -> bag/tuple, we take complex type
including inner types, but bag->bag, tuple->tuple is still not effective.
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