Question

我正在使用相当标准的Hive输出到csv：

beeline -f my_script.hql --output_format=csv2 > data.csv

但是此文件似乎不是正确的CSV：

Unix系统无法读取

$ file data.csv
data.csv   data

pandas中的python无法读取它：

>>> import pandas as pd
>>> pd.read_csv("data.csv")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/estergiadis/opt/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 685, in parser_f
    return _read(filepath_or_buffer, kwds)
  File "/Users/estergiadis/opt/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 463, in _read
    data = parser.read(nrows)
  File "/Users/estergiadis/opt/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 1154, in read
    ret = self._engine.read(nrows)
  File "/Users/estergiadis/opt/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 2059, in read
    data = self._reader.read(nrows)
  File "pandas/_libs/parsers.pyx", line 881, in pandas._libs.parsers.TextReader.read
  File "pandas/_libs/parsers.pyx", line 896, in pandas._libs.parsers.TextReader._read_low_memory
  File "pandas/_libs/parsers.pyx", line 950, in pandas._libs.parsers.TextReader._read_rows
  File "pandas/_libs/parsers.pyx", line 937, in pandas._libs.parsers.TextReader._tokenize_rows
  File "pandas/_libs/parsers.pyx", line 2132, in pandas._libs.parsers.raise_parser_error
pandas.errors.ParserError: Error tokenizing data. C error: Expected 4 fields in line 3, saw 7

该问题似乎与引号（与标准CSV中的"不同）有关。我该如何解决？

Answer 1

Hive使用\ 0符号作为引号，您可以将其替换为'“'。

例如：

paris

蜂巢CSV不能导入熊猫

1 个答案: