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https://issues.apache.org/jira/browse/PIG-2037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai updated PIG-2037:
----------------------------
Fix Version/s: (was: 0.9.0)
Xuefu find this test case because it is in a valid test case in old logical
plan test suite: TestLogicalPlanBuilder. However, the script fail in all 0.6,
0.7, 0.8. The reason the test case success is because we don't invoke validator
in tests.
Some generate thoughts about alias conflict: We shall defer dup-alias check as
long as we don't have ambiguity. For example:
{code}
B = foreach A generate name, UDF(name) as name;
store B into '111';
{code}
This should be valid since there is no ambiguity. The following script should
fail:
{code}
B = foreach A generate name, UDF(name) as name;
C = foreach B generate name;
{code}
Because "name" in C is ambiguous.
Unlink this to 0.9 since it is not a regression.
> Valid query fails to validate
> -----------------------------
>
> Key: PIG-2037
> URL: https://issues.apache.org/jira/browse/PIG-2037
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.9.0
> Reporter: Xuefu Zhang
> Assignee: Daniel Dai
>
> The following test case seems valid, but it fails to validate in 0.9.
> a = load 'st10k' as (name, age, gpa);
> b = group a by name;
> c = foreach b generate flatten(a);
> d = filter c by name != 'fred';
> e = group d by name;\n" +
> f = foreach e generate flatten(d);
> g = foreach f generate name, d::a::name, a::name;
> store g into 'output';"
> ERROR 1108: <line 7, column 14> Duplicate schema alias: d::a::name
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