Multiple markers at this line - Syntax error, parameterized types are only available if source level is 1.5 or greater - The class file Reducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT> contains a signature '(Lorg/apache/hadoop/ mapreduce/Reducer<TKEYIN;TVALUEIN
在eclipse中菜单Window----preferences----java-----compiler把右边中的Compiler
compliance level改为1.6
右击项目,修改properties,找到java
compiler修改compiler compliance level为1.6 or greater