Brian Bruggeman created SPARK-19872:
---------------------------------------
Summary: UnicodeDecodeError in Pyspark on sc.textFile read with
repartition
Key: SPARK-19872
URL: https://issues.apache.org/jira/browse/SPARK-19872
Project: Spark
Issue Type: Bug
Components: PySpark
Affects Versions: 2.1.0
Environment: Mac and EC2
Reporter: Brian Bruggeman
I'm receiving the following traceback:
```
>>> sc.textFile('test.txt').repartition(10).collect()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/rdd.py",
line 810, in collect
return list(_load_from_socket(port, self._jrdd_deserializer))
File "/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/rdd.py",
line 140, in _load_from_socket
for item in serializer.load_stream(rf):
File
"/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/serializers.py",
line 539, in load_stream
yield self.loads(stream)
File
"/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/serializers.py",
line 534, in loads
return s.decode("utf-8") if self.use_unicode else s
File "/Users/brianbruggeman/.envs/dg/lib/python2.7/encodings/utf_8.py", line
16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0x80 in position 0: invalid
start byte
```
I created a textfile (text.txt) with standard linux newlines:
```
a
b
d
e
f
g
h
i
j
k
l
```
I think ran pyspark:
```
$ pyspark
Python 2.7.13 (default, Dec 18 2016, 07:03:39)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use
setLogLevel(newLevel).
17/03/08 13:59:27 WARN NativeCodeLoader: Unable to load native-hadoop library
for your platform... using builtin-java classes where applicable
17/03/08 13:59:32 WARN ObjectStore: Failed to get database global_temp,
returning NoSuchObjectException
Welcome to
____ __
/ __/__ ___ _____/ /__
_\ \/ _ \/ _ `/ __/ '_/
/__ / .__/\_,_/_/ /_/\_\ version 2.1.0
/_/
Using Python version 2.7.13 (default, Dec 18 2016 07:03:39)
SparkSession available as 'spark'.
>>> sc.textFile('test.txt').collect()
[u'a', u'b', u'c', u'd', u'e', u'f', u'g', u'h', u'i', u'j', u'k', u'l']
>>> sc.textFile('test.txt', use_unicode=False).collect()
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l']
>>> sc.textFile('test.txt', use_unicode=False).repartition(10).collect()
['\x80\x02]q\x01(U\x01aU\x01bU\x01cU\x01dU\x01eU\x01fU\x01ge.',
'\x80\x02]q\x01(U\x01hU\x01iU\x01jU\x01kU\x01le.']
>>> sc.textFile('test.txt').repartition(10).collect()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/rdd.py",
line 810, in collect
return list(_load_from_socket(port, self._jrdd_deserializer))
File "/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/rdd.py",
line 140, in _load_from_socket
for item in serializer.load_stream(rf):
File
"/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/serializers.py",
line 539, in load_stream
yield self.loads(stream)
File
"/usr/local/Cellar/apache-spark/2.1.0/libexec/python/pyspark/serializers.py",
line 534, in loads
return s.decode("utf-8") if self.use_unicode else s
File "/Users/brianbruggeman/.envs/dg/lib/python2.7/encodings/utf_8.py", line
16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0x80 in position 0: invalid
start byte
```
This really looks like a bug in the `serializers.py` code.
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