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Pig >> mail # user >> Class Cast Exception


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Viswanathan K S 2012-09-28, 13:03
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Bill Graham 2012-09-28, 15:31
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Re: Class Cast Exception
or what about casting it when you create it like:
(double) SUBSTRING(f1,4,10) as d1:double;

On Fri, Sep 28, 2012 at 11:31 AM, Bill Graham <[EMAIL PROTECTED]> wrote:
> Try generating the substring as a chararray and then casting it to int in
> another FOREACH.
>
> On Fri, Sep 28, 2012 at 6:03 AM, Viswanathan K S <[EMAIL PROTECTED]>wrote:
>
>> Hi,
>>
>>
>> I am a newbie in Pig.
>>
>> Tried extracting a piece of string from a given text using substring and
>> made the extracted string as double.
>>
>> Then performing some mathematical functions on the extracted string throws
>> me an exception.
>>
>> Ex :
>>
>> Data : abc/123.34/-234.45,xxxx
>>           def/122.45/-445.65,xxxx
>>           ghi/223.45/-555.55,xxx
>>
>> Considering ‘ ,’  as the delimiter.
>>
>> a = load  'data' using PigStorage(‘,’) as (f1,f2);
>>
>>
>>
>> B = foreach a generate SUBSTRING(f1,4,10) as d1:double;
>>
>>
>>
>> Now if I compute some mathematical operation on d1, getting a
>> ClassCastException Error :
>>
>>
>>
>> “java.lang.ClassCastException : java.lang.String cannot be cast to
>> java.long.Double”
>>
>>
>>
>> Kindly help regarding the same.
>>
>>
>> Thanks and Regards,
>>
>> ksviswa
>>
>
>
>
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