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Using rddfloat = rdd.map( (float(x[0]), float(x[1])) ), I converted the columns of an rdd into floats so that I could do math with them. Now I'm finished with the math and I want to convert them back into their original StringType.

I've tried rddstr = rddfloat( (str(x[0]), str(x[1]), str(x[2])) ), and it does return a string '40.745555', but that's not the same as the original rdd u'40.745555'. What is the difference between these, and how can I convert it back to how it was originally?

zero323
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wheels
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    The original string is actually a unicode so if you will do `unicode(x[0])` you will get what you wanted – Tom Ron Dec 10 '15 at 17:01

1 Answers1

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I assume you are using Python 2.X. This means that if you want to produce a unicode string, you need to call unicode, like 

rddstr = rddfloat( (unicode(x[0]), str(x[1]), str(x[2])) )

However, to have a better understanding of the differences, I would suggest you to search online, because it's a pretty common question. For example, some of the answers reported in the following questions might sound reasonable for you:

In particular, this answer might help you: https://stackoverflow.com/a/18034409/126125

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