This project includes all the Karamel definition files which are required to do the stream processing comparison between Apache Spark vs Apache Flink in public cloud. You can feed each Karamel definition file file to Karamel to execute its task.
###Step 1 : Deploy the cluster in cloud
Definition file : cluster-deployment.yml
Above definition file will deploy the following clusters.
####Configurations that you might want to change
- EC2 machine type and region:
ec2: region: us-west-2 type: m3.xlarge
You can override the machine type, region for different node groups.
datanodes: size: 1 ec2: region: us-west-2 type: r3.2xlarge price: 0.5
- Size and bid for spot instances
Using the above configuration, size of a group can be changed with the parameter
price: 0.5 specify using spot instances with a bid of $0.5 per hour. But if you do not need to take the risk of using spot instances, you can remove the line
price: 0.5 and Karamel will automatically pick up on-demand instances.
- Memory allocations:
driver_memory: 8192m executor_memory: 30g
jobmanager: heap_mbs: '8192' taskmanager: heap_mbs: '307200'
For a fair comparison, you can allocate the same amount of memory for Spark driver_memory and Flink jobmanager. And similarly for Spark executor_memory and Flink taskmanager.
###Step 2 : Run Yahoo streaming experiment
Definition file: yahoo-streamingbench.yml
This experiment generates a data stream and run Spark and Flink streaming jobs to process the generated data stream.
- IP to deploy the experiment (required*)
You should add the public IP address of your master node in the line for configuring
ips: - 184.108.40.206
- Spark master URL (required*) This is the Spark master URL deployed by the cluster-deployment.yml
spark: master: url: spark://10.125.97.85:7077
If no mannual changes were done for ports, you can just edit the IP address of this paremeter keeping other parts the same. Add the private IP of your master node for this configuration. This is because the communication within the cluster will happen using private IPs.
- Streaming Load
This is the number of messages per second to send to be processed and can be configured with this configuration
attrs: streamingExperiment: .... load: '5000'
load: '5000' sends 5000 messages per second to Kafka for generating the data stream.
You can use the collectl-monitoring tool to monitor the system level performance of these big data engines while executing the TeraSort experiment. Collectl-monitor should be started before you are running the experiment and should be stopped once the experiment is over. You can visit here for an example scenario described for a quick look.