Fix Python – importing pyspark in python shell

This is a copy of someone else’s question on another forum that was never answered, so I thought I’d re-ask it here, as I have the same issue. (See http://geekple.com/blogs/feeds/Xgzu7/posts/351703064084736)
I have Spark installed properly on my machine and am able to run python programs with the pyspark modules without error when using ./bin/pys….

Fix Python – Spark Dataframe distinguish columns with duplicated name

So as I know in Spark Dataframe, that for multiple columns can have the same name as shown in below dataframe snapshot:
[
Row(a=107831, f=SparseVector(5, {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0}), a=107831, f=SparseVector(5, {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0})),
Row(a=107831, f=SparseVector(5, {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0}), a=125….

Fix Python – How to change a dataframe column from String type to Double type in PySpark?

I have a dataframe with column as String.
I wanted to change the column type to Double type in PySpark.
Following is the way, I did:
toDoublefunc = UserDefinedFunction(lambda x: x,DoubleType())
changedTypedf = joindf.withColumn(“label”,toDoublefunc(joindf[‘show’]))

Just wanted to know, is this the right way to do it as while running
through Logis….

Fix Python – Convert spark DataFrame column to python list

I work on a dataframe with two column, mvv and count.
+—+—–+
|mvv|count|
+—+—–+
| 1 | 5 |
| 2 | 9 |
| 3 | 3 |
| 4 | 1 |

i would like to obtain two list containing mvv values and count value. Something like
mvv = [1,2,3,4]
count = [5,9,3,1]

So, I tried the following code: The first line should return a python list of row. I want….

Fix Python – Filter Pyspark dataframe column with None value

I’m trying to filter a PySpark dataframe that has None as a row value:
df.select(‘dt_mvmt’).distinct().collect()

[Row(dt_mvmt=u’2016-03-27′),
Row(dt_mvmt=u’2016-03-28′),
Row(dt_mvmt=u’2016-03-29′),
Row(dt_mvmt=None),
Row(dt_mvmt=u’2016-03-30′),
Row(dt_mvmt=u’2016-03-31′)]

and I can filter correctly with an string value:
df[df.dt_mvmt == ’20….

Fix Python – How to turn off INFO logging in Spark?

I installed Spark using the AWS EC2 guide and I can launch the program fine using the bin/pyspark script to get to the spark prompt and can also do the Quick Start quide successfully.
However, I cannot for the life of me figure out how to stop all of the verbose INFO logging after each command.
I have tried nearly every possible scenario in the be….

Fix Python – How do I add a new column to a Spark DataFrame (using PySpark)?

I have a Spark DataFrame (using PySpark 1.5.1) and would like to add a new column.
I’ve tried the following without any success:
type(randomed_hours) # => list

# Create in Python and transform to RDD

new_col = pd.DataFrame(randomed_hours, columns=[‘new_col’])

spark_new_col = sqlContext.createDataFrame(new_col)

my_df_spark.withColumn(“hours”, s….

Fix Python – How to change dataframe column names in pyspark?

I come from pandas background and am used to reading data from CSV files into a dataframe and then simply changing the column names to something useful using the simple command:
df.columns = new_column_name_list

However, the same doesn’t work in pyspark dataframes created using sqlContext.
The only solution I could figure out to do this easily i….