PySpark Filter shows only 1 row I have a 12 GB .csv file and I am trying to filter rows based on some value in a column under "AppName"

Doing this in Pyspark:

display(df.filter(df.AppName=="23954ec32332dfgd"))


only yields 1 row as opposed to at least 1400 rows.

Any ideas ?
Can you try this:

df1 = df.filter(df.AppName=="23954ec32332dfgd")
print df1.count()