Run, Preview and Debug a Pipeline

Running a Pipeline

Running a pipeline to see how it performs can be done by completing one of the following tasks:

  • Using the Run Run icon

  • Select Run and Start execution from the top menu

  • Pressing F8

In the pipeline run dialog, hit the 'New' button in the upper right corner to create a new 'Pipeline run configuration'.

Hop Configuration Selection

In the dialog that pops up, add 'Local Pipeline' as the pipeline configuration name and choose the 'Local pipeline engine' as engine type.

Run configuration pipeline

Click 'Ok' to return to the pipeline run dialog.

Choose the logging level as described below.

LogLevel Description

Nothing

Do not record any logging output.

Error

Only record errors in logging output.

Minimal

Only use minimal logging.

Basic

This is the default logging level.

Detailed

This logging level gives a detailed logging output.

Debugging

Results in a very detailed output for debugging purposes.

Row Level

Logging at row level.

Make sure your configuration is selected and hit 'Launch'.

When a pipeline has run succesfully green check marks are displayed in the right upper corner on the transforms.

Executed pipeline

The transforms also show a little table icon, giving you access to a preview of the results of that transform.

Preview pipeline

When a pipeline has failed a red failed icon is displayed on the transform containing an error.

Failed pipeline

After each run the execution results are displayed in the panel on the bottom of your window. The Execution Results contains two tabs:

  • Transform Metrics

  • Logging

The Transform Metrics tab displays metrics per transform.

Transform Metrics pipeline

Following metrics are displayed:

Metric Description

Copy

Input

Number of rows read from

Read

Number of rows coming from previous transform

Written

Number of rows leaving this step toward next transform

Output

Number of rows written to a file or table

Updated

Number of rows updated by the transform

Rejected

Errors

Number of errors in the execution. The whole row is marked red if an error occurs

Buffers Input

Buffers Output

Duration

The duration of the execution of the transform

Speed

Status

The step status; Running, Stopped, Finished,

The loggign tab displays the log of the pipeline according to the log level choosen on execution.

Logging pipeline

Preview a pipeline

Preview the result off a pipeline to see how it performs can be done by completing one of the following tasks:

  • Using the preview Run icon

  • Select Run and Preview from the top menu

  • Select Preview from the transform action Menu

  • Click on the tiny bottom right icon after running the transformation

Preview Menu pipeline

In the pipeline preview dialog the transform from which the result must be previewed can be selected. Furthermore the number of rows to preview can be determined as well as a pause condition. When finished press the Quick Launch button. If you want to change the Pipeline run configuration click Configure. The result is displayed in ascending order. The result is previewed as displayed below.

Preview pipeline

Debug a pipeline

Debugging a pipeline to eliminate errors can be done by completing one of the following tasks:

  • Using the debug Run icon

  • Select Run and Debug from the top menu

  • Select Debug output from the transform action Menu

The same dialog is displayed as when using the preview functionality, only the enabled options are different.

Debug pipeline

In the pipeline debug dialog the transform from which the result must be debugged can be selected. Furthermore the number of rows can be determined as well as a pause condition. When finished press the Quick Launch button. If you want to change the Pipeline run configuration click Configure. The result is displayed in descending order.