jennyslu / spark_training

Sample Spark Code

spark.trainer

A copy of code used at Spark Summit for training

#Code Examples

This project is pretty much a bunch of examples for training.

Nesting Examples

Here are a number of examples of using nesting with RDD, DataFrames, and DataSets.

• src/main/scala/com/malaska/spark/training/nested/

Customer Partitioning

Here is an example of building a custom partition

• /src/main/scala/com/malaska/spark/training/partitioning/

Windowing

Windowing is both a complex topic and one that show cases the idea of the Big and the Small.

• /src/main/scala/com/malaska/spark/training/windowing/

Spark Streaming Demo Notes

Single batch counting

Run program

CountingInAStreamExpBatchCounting localhost 9999 ./checkpoint

Send it messages

nc -lk 9999
hi there
hi bob

Live time counting

Run program

CountingInAStreamExpUpdateStateByKey localhost 9999 ./checkpoint

Send it messages

nc -lk 9999
hi there
hi bob

Structured Streaming session counting

Run program

CountingInAStreamExpGroupBy localhost 9999

Send it messages

nc -lk 9999
hi there
hi bob

Structured Streaming session counting Dataset

Run program

CountingInAStreamDatasetExpGroupBy localhost 9999

Send it messages

nc -lk 9999
bob,tim,FB,10,123
bob,tim,FB,11,124
bob,tim,FB,10,125
tim,cat,G,20,124
tim,cat,G,20,125
tim,cat,G,20,126
hi bob