Try IBM StreamSets

This tutorial covers the steps needed to try IBM StreamSets. Although the tutorial provides a simple use case, keep in mind that IBM StreamSets enables you to build, run, and monitor large numbers of complex pipelines.

To complete this tutorial, you must have an existing IBM StreamSets account. If you do not have one, use the following URL to sign up for a free trial:

https://cloud.login.streamsets.com/signup

Note: When you sign up, IBM StreamSets grants your user account all of the roles required to complete the tasks in this tutorial. If you are invited to join an existing organization, your user account might not be granted the required roles.
To try IBM StreamSets, complete the following steps:
  1. Build a Pipeline
  2. Deploy an Engine
  3. Preview the Pipeline
  4. Run a Job
  5. Monitor the Job

Build a Pipeline

Build a pipeline to define how data flows from origin to destination systems and how the data is processed along the way.

This tutorial builds a pipeline that reads a sample CSV file from an HTTP resource URL, processes the data to convert the data type of several fields, and then writes the data to a JSON file on your local machine.

The sample CSV file includes some invalid data, so you'll also see how errors are handled when you preview the pipeline.

  1. Use the following URL to log in to IBM StreamSets: https://cloud.login.streamsets.com/
  2. In the top right toolbar, click Go to Pipeline Canvas > Data Collector.
  3. In the Select Engine dialog box, click Skip & Use Latest Version.

    A blank pipeline named New Pipeline <date> opens in the canvas.

  4. In the canvas, click the Add Origin icon to open the stage selector.
  5. Enter http in the search field, and then select the HTTP Client origin, as follows:

    The origin is added to the canvas.

  6. In the properties panel below the canvas, click the HTTP tab.
  7. Configure the HTTP properties as follows:
    HTTP Property Value
    Resource URL https://docs.streamsets.com/datacollector/sample_data/tutorial/nyc_taxi_data.csv
    Mode Polling
    Polling Interval 600000
    Note: In most cases you would use batch mode to configure the origin to read a single file. In batch mode, the origin processes all available data and then stops the pipeline and job. However, when the origin uses batch mode to read a small amount of data, the Data Collector engine runs and stops the pipeline before you have a chance to monitor the data in real time. Setting the mode to polling with a 10 minute (or 600000 milliseconds) interval causes the origin to read the full contents of the file, wait 10 minutes, and then read the contents of the file again.
  8. Use the default values for the remaining properties.

    The HTTP tab should be configured as follows:

  9. Click the Data Format tab.
  10. For the Data Format property, select Delimited.
  11. Click Show Advanced Options, and then for the Header Line property, select With Header Line.
  12. Use the default values for the remaining properties.

    Since the sample data is read from a file, the origin reads all fields as String. So, next you'll add a Field Type Converter processor to the pipeline to convert several datetime fields to the Datetime data type.

  13. Click the Add Stage icon to open the stage selector.
  14. Click Processors, enter type in the search field, and then select the Field Type Converter processor.
  15. On the Conversions tab, convert fields with datetime data to Datetime as follows:
    Conversion Property Value
    Conversion Method By Field Name
    Fields to Convert
    • /dropoff_datetime
    • /pickup_datetime
    Note: To reference a field, you enter the path of the field. For simple records of data such as the sample CSV file, you reference a field as follows: /<field name>.
    Convert to Type Datetime
    Date Format yyyy-MM-dd HH:mm:ss

    Now that you've built part of the pipeline, you can preview the pipeline to view several records of source data. However, before previewing your first pipeline, you must deploy an IBM StreamSets engine.

Deploy an Engine

IBM StreamSets allows you to unlock your data without ceding control. Deploy a Data Collector engine to your local machine to maintain all ownership and control of your data.

  1. In the toolbar above the pipeline canvas, click Deployment, and then click Deploy Engine, as follows:
    Note: If you have already deployed an engine or have access to an engine deployed by another user in your organization, then the pipeline canvas displays the name of the deployment rather than Deployment. You can skip these steps and continue with Preview the Pipeline.
  2. In the Deploy an Engine dialog box, deploy the engine in one of the following ways:
    • Run a Docker image - As the easiest way to get started, most users like to deploy an engine using Docker. Download and install Docker Desktop, and then deploy the engine in a Docker container.
    • Download and install from a script - Advanced users might prefer to take full control of setting up a machine. Run an installation script that downloads and extracts a tarball file on your machine, and then deploys the engine so that it runs locally on the machine.

Run a Docker Image

Compatible for most operating systems.

  1. Download and install Docker Desktop.

    On most operating systems, Docker Desktop starts automatically after installation.

    On Windows, you must start Docker Desktop.

  2. Open a command prompt or terminal.
  3. Click the Copy to Clipboard icon () next to the generated command.
  4. At the command prompt, paste and then run the copied command.

    When the Deploy an Engine dialog box indicates that the engine has successfully started, click Use Engine.

    For more help with engine installation, try these troubleshooting tips.

Download and Install from a Script

Not compatible with Windows. Windows users must run a Docker image.

  1. Open a command prompt or terminal.
  2. Run the following command to set the file descriptors limit required by Data Collector: 
    ulimit -n 32768
    Note: This command sets the file descriptors limit in the current command prompt or terminal only. To retain the limits after relaunching, see the Data Collector documentation.
  3. Run the following command to check if Java 8, Java 11, or Java 17 is installed: 
    java -version

    If none of these Java versions is installed, we recommend downloading and installing OpenJDK 17. Use the Eclipse Temurin installation instructions for your operating system, macOS or Linux.

  4. Click the Copy to Clipboard icon () next to the generated command.
  5. At the command prompt, paste and then run the copied command.
  6. Respond to the command prompts to enter download and installation directories.

    When the Deploy an Engine dialog box indicates that the engine has successfully started, click Use Engine.

    For more help with engine installation, try these troubleshooting tips.

Troubleshooting

Use the following troubleshooting tips for help with deploying an engine:

When I run the command to deploy an engine, I get the following error:
Could not resolve host: na01.hub.streamsets.com
Your machine must make an outbound connection to Control Hub to deploy the engine. If your machine resides behind a firewall, contact your IT administrator to allow the outbound connections required by IBM StreamSets engines.
When I run the Docker command to deploy an engine on Linux, I get the following error:
permission denied while trying to connect to the Docker daemon socket
On some Linux machines, you must use sudo to run the command with root privileges.
When I run the Docker command to deploy an engine on Windows, I get the following error: 
Error: error during connect: this error may indicate that the docker daemon is not running
On Windows, Docker Desktop does not start automatically after you finish the installation and restart Windows. You must start Docker Desktop as described in the Docker documentation, and then run the command again.
When I run the Docker command to deploy an engine on Windows, I get the following error:
Error: error during connect: in the default daemon configuration on Windows, the docker client must be run with elevated privileges to connect
On some Windows machines, you must run the Docker command as an administrator. Run the command prompt or PowerShell as an administrator, and then run the command again.
When I try to start Docker Desktop on Windows, I receive a message that Docker Desktop requires a newer WSL kernel version.
On some Windows machines, you must update the WSL kernel to the latest version before you can start Docker Desktop.
To update the WSL kernel, run the following command: 
wsl --update
Or for more detailed instructions, see the Microsoft documentation.

Preview the Pipeline

Now that you've deployed an engine, you can preview the pipeline.

  1. In the toolbar above the pipeline canvas, click the Preview icon: .

    When you preview the pipeline, you can view several records of source data.

    The HTTP Client origin is selected in the pipeline canvas, and preview displays several records of output data read by the origin. Since this is the origin of the pipeline, no input data displays.

    Notice how the Field Type Converter processor displays a red square with a counter of 1, indicating that the stage has encountered an error.

  2. Select the Field Type Converter processor in the canvas.

    Preview highlights the first record in red and displays an error message indicating that the first record has an unparsable date. The date data includes invalid characters at the end, as follows:

    By default, the stage passes error records to the pipeline for error handling, and then the pipeline discards the error records. Since this is sample data, you can leave the default error record handling. When you run the pipeline, this first record will not be passed to the next stage for processing.

  3. With the processor still selected in the canvas, scroll down in the preview panel to display the input and output data of the second record.

    You can see that the date fields in the second record were successfully converted to the Datetime data type:

  4. Click Close Preview to close the preview.
  5. Click the Add Stage icon to open the stage selector.
  6. Enter local in the search field, and then select the Local FS destination.

    The Local FS destination writes to files in a local file system.

  7. Click the Output Files tab, and configure the following property.

    Use the defaults for the advanced options:

    Output Files Property Description
    Directory Template By default, the directory template includes datetime variables to create a directory structure for output files. This is intended for writing large volumes of data.

    Since you are only processing the sample file, you don't need the datetime variables. Go ahead and delete the default and enter a local directory where you want the files to be written.

    For example: /<base directory>/tutorial/destination
  8. Click the Data Format tab, and select JSON to write the data using the JSON format.

    Use the defaults for the remaining properties.

Run a Job

Next, you'll check in the pipeline to indicate that your design is complete and the pipeline is ready to be added to a job and run. When you check in a pipeline, you enter a commit message. IBM StreamSets maintains the commit history of each pipeline.

Jobs are the execution of the dataflow. Jobs enable you to manage and orchestrate large scale dataflows that run across multiple engines.

Since this pipeline processes one file, there's no need to enable the job to start on multiple engines or to increase the number of pipeline instances that run for the job. As a result, you can simply use the default values when creating the job. As you continue to use IBM StreamSets, you can explore how to run pipelines at scale.

  1. With the pipeline open in the canvas, click the Check In icon: .
  2. Enter a commit message. For now, you can simply use the default message.
    As a best practice, state what changed in this pipeline version so that you can track the commit history of the pipeline.
  3. Click Publish & Next.

    The Share Pipeline step displays. You can skip this step for now. When additional users join your organization, you must share the pipeline to grant them access to it.

  4. Click Save & Create New Job.

    The Create Job Instances wizard appears.

  5. Use the defaults in the Define Job step, and click Next.
  6. In the Select Pipeline step, click Next.
  7. Use the defaults in the Configure Job step, and click Save & Next.
  8. Click Start & Monitor Job.

    The job displays in the canvas, and Control Hub indicates that the job is active.

Monitor the Job

Next, you'll monitor the progress of the job. When you start a job, Control Hub sends the pipeline to the Data Collector engine deployed to your local machine. The engine runs the pipeline, sending status updates and metrics back to Control Hub.

  1. As the job runs, click the Realtime Summary tab in the monitor panel to view the real-time statistics for the job:

    Notice how the Record Count chart displays more input records than output records. That's because the pipeline is configured to discard the error records encountered by the Field Type Converter processor.

  2. Select the Field Type Converter processor in the canvas, and then click the Errors tab.

    The tab displays an error message for each error record, as follows:

  3. Expand one of the error records, and you'll see the same invalid data causing the error that you saw during the preview of the pipeline, as follows:

    Notice how the HTTP Client origin has displayed the running icon () for the last several minutes although the input record count has not increased. That's because you configured the origin to poll the specified URL every 10 minutes. So the origin waits for that interval, then reads the file again.

    When you've finished monitoring the data, stop the job so that the pipeline doesn't run indefinitely.

  4. Click the Stop icon: .
    The Confirmation dialog box appears.
  5. To stop the job, click OK.
    The job transitions from a deactivating to an inactive state.
  6. After the job successfully stops, click Close.
  7. Locate the local directory configured for the destination, /<base directory>/tutorial/destination, and open the file to verify that the data was written in JSON format.
That's it! You've finished building, running, and monitoring your first pipeline.

Next Steps

Now that you're familiar with the main tasks of managing pipelines, here are some next steps you can take to further explore IBM StreamSets:
Invite others to join
Invite other users to join your organization and collaboratively manage pipelines as a team.
Modify your first pipeline
Modify your first pipeline to add a different Data Collector destination to write to another external system. You can also add additional processors to explore the other types of processing available with Data Collector pipelines.
Or if you have sample data in another source system, add a different origin to read data from that system.
Explore sample pipelines
Explore the sample pipelines included with Control Hub.
Explore engines
Explore team-based features
  • Learn how teams of data engineers can use Control Hub to collaboratively build pipelines. Control Hub provides full lifecycle management of the pipelines, allowing you to track the version history and giving you full control of the evolving development process.
  • To create a multitenant environment within your organization, create groups of users. Grant roles to these groups and share objects within the groups to grant each group access to the appropriate objects.
  • Use connections to limit the number of users that need to know the security credentials for external systems. Connections also provide reusability - you create a connection once and then other users can reuse that connection in multiple pipelines.
  • Use job templates to hide the complexity of job details from business analysts.
Explore advanced features
  • Use topologies to map multiple related jobs into a single view. A topology provides interactive end-to-end views of data as it traverses multiple pipelines.
  • Create a subscription to listen for Control Hub events and then complete an action when those events occur. For example, you can create a subscription that sends a message to a Slack channel or emails an administrator each time a job status changes.
  • Create a sequence to run a collection of jobs in sequenced order based on conditions.
  • Schedule a job to start or stop on a weekly or monthly basis.