tAmazonAuroraCommit - 6.3

Talend Components Reference Guide

EnrichVersion
6.3
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

Function

This component validates the data processed through the Job into the connected Amazon Aurora database.

Purpose

Using a unique connection, this component commits in one go a global transaction instead of doing that on every row or every batch and thus provides gain in performance.

Note that if you need to commit each statement as an individual transaction, you have to use the Auto Commit function available in the connection component.

tAmazonAuroraCommit Properties

Component family

Cloud/Amazon/Aurora

Basic settings

Component List

Select the tAmazonAuroraConnection component for which you want the commit action to be performed.

 

Close Connection

This check box is selected by default and it allows you to close the database connection once the commit is done. Clear this check box to continue to use the selected connection after the component has performed its task.

Warning

If you want to use a Row > Main connection to link tAmazonAuroraCommit to your Job, your data will be committed row by row. In this case, do not select the Close Connection check box or your connection will be closed before the end of your first row commit.

Advanced settings

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at the Job level as well as at each component level.

Dynamic settings

Click the [+] button to add a row in the table and fill the Code field with a context variable to choose your database connection dynamically from multiple connections planned in your Job. This feature is useful when you need to access database tables having the same data structure but in different databases, especially when you are working in an environment where you cannot change your Job settings, for example, when your Job has to be deployed and executed independent of Talend Studio.

Once a dynamic parameter is defined, the Component List box in the Basic settings view becomes unusable.

For examples on using dynamic parameters, see Scenario 3: Reading data from MySQL databases through context-based dynamic connections and Scenario: Reading data from different MySQL databases using dynamically loaded connection parameters. For more information on Dynamic settings and context variables, see Talend Studio User Guide.

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

This component is more commonly used with other Amazon Aurora components, especially with the tAmazonAuroraConnection and tAmazonAuroraRollback components.

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.

Related scenario

For a related scenario, see Scenario: Handling data with Amazon Aurora.