blackcore

摘要：错误原因编译Java和运行Java所使用的Java的版本不一致导致；解决办法修改运行环境的Java版本或者修改编译环境的Java版本，让两者保持一致即可；java.lang.UnsupportedClassVersionError: zikker/sample/TestNormal : Unsupported major.minor version 51.0右击项目进入properties->java compiler，选择相应的compiler compliance level即可 阅读全文

摘要：1 --测试Top N后的其它统计 2 A = LOAD '/TraceParser/blackcore/' USING PigStorage() as (lk_id:chararray,host:chararray); 3 --DUMP A; 4 5 B = GROUP A BY lk_id; 6 B = FOREACH B GENERATE group as lk_id,COUNT($1) as amount; 7 --DUMP B; 8 9 --TOP N的数据集10 C = ORDER B BY amount DESC;11 C = LIMIT C 5;12 --DUM 阅读全文