[jira] [Created] (SPARK-21227) Unicode in Json field causes AnalysisException when selecting from Dataframe

["Seydou Dia (JIRA)" <ji...@apache.org>]

Seydou Dia created SPARK-21227:
----------------------------------

             Summary: Unicode in Json field causes AnalysisException when selecting from Dataframe
                 Key: SPARK-21227
                 URL: https://issues.apache.org/jira/browse/SPARK-21227
             Project: Spark
          Issue Type: Bug
          Components: PySpark
    Affects Versions: 2.1.0
            Reporter: Seydou Dia


Hi,

please find below the step to reproduce the issue I am facing,
$ pyspark


{code:python}
Python 3.4.3 (default, Sep  1 2016, 23:33:38) 
[GCC 4.8.3 20140911 (Red Hat 4.8.3-9)] on linux
Type "help", "copyright", "credits" or "license" for more information.
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
17/06/27 12:29:05 WARN Utils: Service 'SparkUI' could not bind on port 4040. Attempting port 4041.
17/06/27 12:29:05 WARN Utils: Service 'SparkUI' could not bind on port 4041. Attempting port 4042.
17/06/27 12:29:08 WARN Client: Neither spark.yarn.jars nor spark.yarn.archive is set, falling back to uploading libraries under SPARK_HOME.
Welcome to
      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /__ / .__/\_,_/_/ /_/\_\   version 2.1.0
      /_/

Using Python version 3.4.3 (default, Sep  1 2016 23:33:38)
SparkSession available as 'spark'.

>>> sc=spark.sparkContext
>>> js = ['{"city_name": "paris"}'
...     , '{"city_name": "rome"}'
...     , '{"city_name": "berlin"}'
...     , '{"cıty_name": "new-york"}'
...     , '{"cıty_name": "toronto"}'
...     , '{"cıty_name": "chicago"}'
...     , '{"cıty_name": "dubai"}']
>>> myRDD = sc.parallelize(js)
>>> myDF = spark.read.json(myRDD)
>>> myDF.printSchema()                                                          
root
 |-- city_name: string (nullable = true)
 |-- cıty_name: string (nullable = true)

>>> myDF.select(myDF['city_name'])
Traceback (most recent call last):
  File "/usr/lib/spark/python/pyspark/sql/utils.py", line 63, in deco
    return f(*a, **kw)
  File "/usr/lib/spark/python/lib/py4j-0.10.4-src.zip/py4j/protocol.py", line 319, in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling o226.apply.
: org.apache.spark.sql.AnalysisException: Reference 'city_name' is ambiguous, could be: city_name#29, city_name#30.;
	at org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.resolve(LogicalPlan.scala:264)
	at org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.resolveQuoted(LogicalPlan.scala:168)
	at org.apache.spark.sql.Dataset.resolve(Dataset.scala:217)
	at org.apache.spark.sql.Dataset.col(Dataset.scala:1073)
	at org.apache.spark.sql.Dataset.apply(Dataset.scala:1059)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
	at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
	at py4j.Gateway.invoke(Gateway.java:280)
	at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
	at py4j.commands.CallCommand.execute(CallCommand.java:79)
	at py4j.GatewayConnection.run(GatewayConnection.java:214)
	at java.lang.Thread.run(Thread.java:745)


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/spark/python/pyspark/sql/dataframe.py", line 943, in __getitem__
    jc = self._jdf.apply(item)
  File "/usr/lib/spark/python/lib/py4j-0.10.4-src.zip/py4j/java_gateway.py", line 1133, in __call__
  File "/usr/lib/spark/python/pyspark/sql/utils.py", line 69, in deco
    raise AnalysisException(s.split(': ', 1)[1], stackTrace)
pyspark.sql.utils.AnalysisException: "Reference 'city_name' is ambiguous, could be: city_name#29, city_name#30.;"



{code}




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