Tail

Overview

You can use this Snap to read the specified number of documents from the end of the input stream.



  • This is a Flow-type Snap.
  • Does not support Ultra Tasks

Snap views

Type Description Examples of upstream and downstream Snaps
Input Number of input documents to send to the output view.
Output The output is structured results in JSON format based on the input records.
Learn more about Error handling.

Snap settings

Legend:
  • Expression icon (): Allows using pipeline parameters to set field values dynamically (if enabled). SnapLogic Expressions are not supported. If disabled, you can provide a static value.
  • SnapGPT (): Generates SnapLogic Expressions based on natural language using SnapGPT. Learn more.
  • Suggestion icon (): Populates a list of values dynamically based on your Snap configuration. You can select only one attribute at a time using the icon. Type into the field if it supports a comma-separated list of values.
  • Upload : Uploads files. Learn more.
Learn more about the icons in the Snap settings dialog.
Field/Field set Type Description
Label String

Required. Specify a unique name for the Snap. Modify this to be more appropriate, especially if more than one of the same Snaps is in the pipeline.

Default value: Tail

Example: Tail
Number of documents Integer/Expression Required. Specify the number of document inputs to send to the output view relative to the end of the input stream.

Default value: 1

Example: 5

Documents offset Integer/Expression Required. Specify the number of documents to offset relative to the start of the input stream. This is used to exclude headers or similar data from being processed by the Snap.

Default value: 0

Example: 1

Snap execution Dropdown list
Choose one of the three modes in which the Snap executes. Available options are:
  • Validate & Execute: Performs limited execution of the Snap and generates a data preview during pipeline validation. Subsequently, performs full execution of the Snap (unlimited records) during pipeline runtime.
  • Execute only: Performs full execution of the Snap during pipeline execution without generating preview data.
  • Disabled: Disables the Snap and all Snaps that are downstream from it.

Default value: Validate and Execute

Example: Execute only