你可能想使用自定义项。例如python和您提供的：
自定义项：

from com.xhaus.jyson import JysonCodec as json
from com.xhaus.jyson import JSONDecodeError

@outputSchema(
    "rels:{t:('{id:chararray,c1:chararray, c2:chararray, c3:chararray...}')}"
)
def parse_json(line):
    try:
        parsed_json = json.loads(line)
    except:
       return None
    return tuple(parsed_json.values())

清管器：

REGISTER 'path-to-udf.py' USING jython AS py_udf ;

raw_data = LOAD 'path-to-your-data'
           USING PigStorage('\n')
           AS (line:chararray) ;

-- Parse lines using UDF
parsed_data = FOREACH cleanRawLogs GENERATE FLATTEN(py_f.parse_json(line)) ;