tFlowMeter - 6.1

Talend Components Reference Guide

EnrichVersion
6.1
EnrichProdName
Talend Big Data
Talend Big Data Platform
Talend Data Fabric
Talend Data Integration
Talend Data Management Platform
Talend Data Services Platform
Talend ESB
Talend MDM Platform
Talend Open Studio for Big Data
Talend Open Studio for Data Integration
Talend Open Studio for Data Quality
Talend Open Studio for ESB
Talend Open Studio for MDM
Talend Real-Time Big Data Platform
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

tFlowMeter Properties

Component family

Logs & Errors

 

Function

Counts the number of rows processed in the defined flow.

Purpose

The number of rows is then meant to be caught by the tFlowMeterCatcher for logging purpose.

Basic settings

Use input connection name as label

Select this check box to reuse the name given to the input main row flow as label in the logged data.

 

Mode

Select the type of values for the data measured: Absolute: the actual number of rows is logged

Relative: a ratio (%) of the number of rows is logged. When this option is selected, a Connections List shows to let you select a reference connection.

 

Thresholds

Adds a threshold to watch proportions in volumes measured. you can decide that the normal flow has to be between low and top end of a row number range, and if the flow is under this low end, there is a bottleneck.

Global Variables

ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl + Space to access the variable list and choose the variable to use from it.

For further information about variables, see Talend Studio User Guide.

Usage

Cannot be used as a start component as it requires an input flow to operate.

Log4j

If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Limitation

n/a

If you have a need of log, statistics and other measurement of your data flows, see Talend Studio User Guide.

Related scenario

For related scenario, see Scenario: Catching flow metrics from a Job