Vyacheslav Murashkin

Seams like hadoop-streaming_.jar is missing on your nodes. Check if your environtment points to the correct HADDOP__ paths or try to add hadoop-streaming*.jar with -libjar option.

In general cases mapper callable object should support 2-parameters interface for ex. ``` python def mapper(key, value): yield key, value.split('\t') ``` Where `value` is usually a single value or a...