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From "Felix Neutatz (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-1820) Bug in DoubleParser and FloatParser - empty String is not casted to 0
Date Thu, 02 Apr 2015 22:03:56 GMT
Felix Neutatz created FLINK-1820:
------------------------------------

             Summary: Bug in DoubleParser and FloatParser - empty String is not casted to
0
                 Key: FLINK-1820
                 URL: https://issues.apache.org/jira/browse/FLINK-1820
             Project: Flink
          Issue Type: Bug
          Components: core
    Affects Versions: 0.8.1, 0.8.0, 0.9
            Reporter: Felix Neutatz
            Assignee: Felix Neutatz
            Priority: Critical
             Fix For: 0.9


Hi,

I found the bug, when I wanted to read a csv file, which had a line like:
"||\n"

If I treat it as a Tuple2<Long,Long>, I get as expected a tuple (0L,0L).

But if I want to read it into a Double-Tuple or a Float-Tuple, I get the following error:

java.lang.AssertionError: Test failed due to a org.apache.flink.api.common.io.ParseException:
Line could not be parsed: '||'
ParserError NUMERIC_VALUE_FORMAT_ERROR 

This error can be solved by adding an additional condition for empty strings in the FloatParser
/ DoubleParser.

We definitly need the CSVReader to be able to read "empty values".

I can fix it like described if there are no better ideas :)




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