vsouza

package main

import (
	"io"
	"log"
	"net/http"
)

type httpClient interface {
	Get(string) (*http.Response, error)

vsouza

func main() {

	ctx := context.Background()

	// trap Ctrl+C and call cancel on the context
	ctx, cancel := context.WithCancel(ctx)
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt)
	defer func() {
		signal.Stop(c)

vsouza

Installing Cassandra on Mac OS X

Install Homebrew

Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

vsouza

package main

import (
	"log"
	"myserver"
	"net/http"
)

const addr = "localhost:12345"

vsouza

Branching

Quick Legend

Description, Instructions, Notes

Instance	Branch

vsouza

spark_streaming_context.start()
spark_streaming_context.awaitTermination()
spark_streaming_context.stop()

vsouza

def toRedshift(time, rdd):
    try:

        sqlContext = getSqlContextInstance(rdd.context)
        schema = StructType([
            StructField('user_id', StringType(), True),
            StructField('device_id', StringType(), True),
            StructField('steps', IntegerType(), True),
            StructField('battery_level', IntegerType(), True),
            StructField('calories_spent', IntegerType(), True),

vsouza

spark_context.saveAsTextFile("s3n://parents/activity_log/01010101.txt")

vsouza

spark_context = SparkContext(appName=kinesis_app_name)
spark_streaming_context = StreamingContext(spark_context, spark_batch_interval)
sql_context = SQLContext(spark_context)

kinesis_stream = KinesisUtils.createStream(
    spark_streaming_context, kinesis_app_name, kinesis_stream, kinesis_endpoint,
    aws_region, kinesis_initial_position, kinesis_checkpoint_interval)

py_rdd = kinesis_stream.map(lambda x: json.loads(x))

vsouza

from __future__ import print_function
from pyspark import SparkContext
from pyspark.streaming import StreamingContext
from pyspark.streaming.kinesis import KinesisUtils, InitialPositionInStream
import datetime
import json
from pyspark.sql import SQLContext, Row
from pyspark.sql.types import *

aws_region = 'us-east-1'