Michael Armbrust created SPARK-8022:
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Summary: df.select(df.columnName) no longer works
Key: SPARK-8022
URL: https://issues.apache.org/jira/browse/SPARK-8022
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.4.0
Reporter: Michael Armbrust
Assignee: Davies Liu
Priority: Blocker
This seems to be a pretty serious regression:
{{{
df = sqlContext.load("/home/michael/spark.json", "json")
df.select(df.committerEmail)
}}}
{{{
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-2-76c71a2870a4> in <module>()
----> 1 df.select(df.committerEmail)
/home/ubuntu/databricks/spark/python/pyspark/sql/dataframe.pyc in select(self,
*cols)
736 [Row(name=u'Alice', age=12), Row(name=u'Bob', age=15)]
737 """
--> 738 jdf = self._jdf.select(self._jcols(*cols))
739 return DataFrame(jdf, self.sql_ctx)
740
/home/ubuntu/databricks/spark/python/pyspark/sql/dataframe.pyc in _jcols(self,
*cols)
628 if len(cols) == 1 and isinstance(cols[0], list):
629 cols = cols[0]
--> 630 return self._jseq(cols, _to_java_column)
631
632 @since("1.3.1")
/home/ubuntu/databricks/spark/python/pyspark/sql/dataframe.pyc in _jseq(self,
cols, converter)
615 def _jseq(self, cols, converter=None):
616 """Return a JVM Seq of Columns from a list of Column or names"""
--> 617 return _to_seq(self.sql_ctx._sc, cols, converter)
618
619 def _jmap(self, jm):
/home/ubuntu/databricks/spark/python/pyspark/sql/column.pyc in _to_seq(sc,
cols, converter)
58 if converter:
59 cols = [converter(c) for c in cols]
---> 60 return sc._jvm.PythonUtils.toSeq(cols)
61
62
/home/ubuntu/databricks/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/java_gateway.py
in __call__(self, *args)
527
528 args_command = ''.join(
--> 529 [get_command_part(arg, self.pool) for arg in new_args])
530
531 command = CALL_COMMAND_NAME +\
/home/ubuntu/databricks/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/protocol.py
in get_command_part(parameter, python_proxy_pool)
263 command_part += ';' + interface
264 else:
--> 265 command_part = REFERENCE_TYPE + parameter._get_object_id()
266
267 command_part += '\n'
AttributeError: 'list' object has no attribute '_get_object_id'
}}}
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