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https://issues.apache.org/jira/browse/PIG-332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Gates resolved PIG-332.
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Resolution: Won't Fix
As Pi noted, this is a side effect of how we implement the data structures in
Java.
> Comparing float column with double constant fails
> -------------------------------------------------
>
> Key: PIG-332
> URL: https://issues.apache.org/jira/browse/PIG-332
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.2.0
> Reporter: Pradeep Kamath
> Priority: Minor
>
> Script :
> {code}
> a = load '/user/pig/tests/data/singlefile/studenttab10k' using PigStorage()
> as (name:chararray, age:int, gpa:float);
> b = filter a by name == 'fred allen' and age == 61 and gpa == 1.42;
> store b into '/user/pig/tests/results/FilterEq_7.out' using PigStorage;
> {code}
> Result has 0 rows when infact there should be 1 row.
> The reason is within Pig code in POCast, we do
> {code}
> res.result = new Double(((Float)res.result).doubleValue());
> {code}
> to promote the column to a double. As a results of the above code, the
> precisions don't match and hence the filter throws away the row.
> This could be treated as "Working as designed" and the user may need to
> explicity do gpa == 1.42f - just wanted it to be discussed and pointed out in
> the 2.0 release notes.
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