In Spark >= 1.5 you can use the size function to calculate the length of a column:
You can configure the AWS Command Line Interface to use a role by creating a profile for the role in the ~/.aws/config file. The following example shows a ro...
```python import matplotlib.pyplot as plt
```python import matplotlib.pyplot as plt import numpy as np
matplotlib.pyplot.gca(**kwargs) gets the current Axes instance on the current figure matching the given keyword args, or create one.