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Use one of the following options to enable the Snowflake tracing log.
Add "tracing=All" to the component Advanced Settings > Additional JDBC Parameters field.
Configure the JDBC URL using the following parameters:
jdbc:snowflake://<account>.snowflakecomputing.com?db=<dbname>&warehouse=<whname>&schema=<scname>&tracing=ALL
You can locate the trace log, stored in the tmp log file directory, by running a tJava component with the following code:
System.out.printIn(System.getProperty("java.io.tmpdir"));
For more information, see the Snowflake KB article, How To: Generate log files for Snowflake Drivers & Connectors
Talend Cloud platform provides computational capabilities that allow organizations to securely run data integration processes natively from cloud to cloud, on-premises to cloud, or cloud to on-premises environments.
These capabilities are powered by compute resources, commonly known as Engines. This article covers the four basic types.
Content:
A Cloud Engine is a compute resource managed by Talend in Talend Cloud that executes Job tasks.
A capability in Talend Cloud platform that allows you to securely run data integration Jobs natively from cloud to cloud, on-premises to cloud, or cloud to on-premises environments completely within your environment for enhanced performance and security, without transferring the data through the Cloud Engines in Talend Cloud platform.
Java-based runtime (similar to a Cloud Engine) to execute Talend Jobs on-premises or on another cloud platform that you control.
A Remote Engine Gen2 is a secure execution engine on which you can safely execute data pipelines (that is, data flows designed using Talend Pipeline Designer). It allows you to have control over your execution environment and resources because you can create and configure the engine in your own environment (Virtual Private Cloud or on-premises). Previously referred to as Remote Engines for Pipelines, this engine was renamed Remote Engine Gen2 during H1/2020. It is a Docker-based runtime to execute data pipelines on-premises or on another cloud platform that you control.
A Remote Engine Gen2 ensures:
Cloud Engine for Design is a built-in runner that allows you to easily design pipelines without setting up any processing engines. With this engine you can run two pipelines in parallel. For advanced processing of data, Talend recommends installing the secure Remote Engine Gen2.
The following table lists a comparative perspective between the two engines:
Cloud Engine (CE) |
Remote Engine (RE) |
Consumes 45,000 engine tokens |
Consumes 9,000 engine tokens |
Runs within Talend Cloud platform – no download required |
Downloadable software from Talend Cloud platform |
Managed by Talend, run on-demand as needed to execute Jobs |
Managed by the customer |
No customer resources required |
Customer can run on Windows, Linux, or OS X |
Set physical specifications (Memory, CPU, Temp Disk Space) |
Unlimited Memory, CPU, and Temp Space |
Require data sources/targets to be visible through the internet to the Cloud Engine |
Hybrid cloud or on-premises data sources |
Restricted to three concurrent Jobs |
Unlimited concurrent Jobs (default three) |
Available within Talend Cloud portal |
Available in AWS and Azure Marketplace |
Runs natively within Talend Cloud iPaaS infrastructure |
Uses HTTPS calls to Talend Cloud service to get configuration information and Job definition and schedules |
Cloud Engine for Design (CE4D) |
Remote Engine Gen 2 (REG2) |
Consumes zero engine tokens |
Consumes 9000 engine tokens |
Build upon a Docker-compose stack |
Build upon a Docker-compose stack |
Available as Cloud Image and Instantiated in Talend Cloud platform on behalf of the customer |
Available as an AMI Cloud Formation Template (for AWS) and Azure Image (for Azure) |
Not available as downloadable software as this type of engine is only suitable for design using Pipeline Designer in Talend Cloud portal |
Available as .zip or .tar.gz (for local deployment) |
A Cloud Engine for Design is included with Talend Cloud platform, to offer a serverless experience during design and testing. However, it is not meant for production (that is, not for running pipelines in non-development environments). It won’t scale for prod-size volumes and long-running pipelines. It should be used for design teams to get a preview working and test execution during development. This engine should not be used for production execution. |
It is used to run artifacts, tasks, preparations, and pipelines in the cloud, as well as creating connections and fetching data samples. |
Static IPs cannot be enabled for CE4D within Talend Management Console |
Not applicable as REG2 runs outside Talend Management Console (that is, in Customer Data Center) |
Additional engines (CE or RE) may be required if you have one or more of the following use cases:
These use cases depend on the deployment architecture in the specific customer environment and layout of the Remote Engine at the environment or workspace level configurations. This would need proper capacity planning and automatic horizontal and vertical scaling of the compute Engines.
Question |
Guideline |
How much data must be transferred per hour? |
Each Cloud Engine can transfer 225 GB per hour. |
How many separate flows can run in parallel? |
Each Cloud Engine can run up to three flows in parallel. |
How much temporary disk space is needed? |
Each Cloud Engine has 200GB of temp space. |
How CPU and memory intensive are the flows? |
Each Cloud Engine provides 8 GB of memory and two vCPU. This is shared among any concurrent flows. |
Are separate execution environments required? |
Many users desire separate execution for QA/Test/Development and Production. If this is needed, additional Cloud Engines should be added as required. |
If a source or target system is not accessible through the internet:
If one of the systems is not accessible using the internet, then a Remote Engine is needed.
When single flow requirements exceed the capacity of a Talend Cloud Engine:
If the Cloud Engine is too small (for example, the maximum memory of 5.25 GB, temporary space of 200 GB, two vCPU, or the maximum of 225 GB per hour) then, a Remote Engine is needed.
If a native driver is required:
If the solution requires a native driver, which is not part of the Talend action or Job generated code, a typical case for this is SAP with the JCO v3 Library, MS SQL Server Windows Authentication, then a Remote Engine is needed.
Data jurisdiction, security, or compliance reasons:
It may be desirable or required to retain data in a particular region or country for data privacy reasons. The data being processed may be subject to regulations such as PCI or HIPAA, or it may be more efficient to process the data within a single data center or public cloud location. These are all valid reasons to use a Remote Engine.
Cloud Engine (CE) |
Remote Engine (RE) |
Remote Engine Gen 2 (REG2) |
Cloud Engines allow you to run batch tasks that use on-premises or cloud applications and datasets (sources, targets) |
Remote Engines allow you to run batch tasks or microservices (APIs or Routes) that use on-premises or cloud applications and datasets (sources, targets) |
The Remote Engine Gen2 is used to run artifacts, tasks, preparations, and pipelines in the cloud, as well as creating connections and fetching data samples |
Consumes 45,000 engine tokens |
Consumes 9,000 engine tokens |
Consumes 9,000 engine tokens |
No download required - Runs within Talend Cloud platform |
Downloadable software from Talend Cloud platform |
Downloadable software from Talend Cloud platform |
Managed by Talend, run on-demand as needed to execute Jobs |
Managed by the customer |
Managed by the customer |
No customer resources required |
Can run on Windows, Linux, or OS X |
Require compatible Docker and Docker compose versions for Linux, Mac, and Windows |
Set physical specifications (Memory, CPU, and Temp Disk Space) |
Unlimited Memory, CPU, and Temp Space |
Unlimited Memory, CPU, and Temp Space |
Require data sources/targets to be visible through the internet to the Cloud Engine |
Hybrid cloud or on-premises data sources |
Hybrid cloud or on-premises data sources |
Restricted to three concurrent Jobs |
Unlimited concurrent Jobs (default three) |
Unlimited concurrent pipelines (configurable) |
Available within Talend Cloud portal |
Available in AWS and Azure Marketplace |
Available as an AMI Cloud Formation Template (for AWS) and Azure Image (for Azure) |
Runs natively within Talend Cloud iPaaS infrastructure |
Uses HTTPS calls to Talend Cloud service to get configuration information and Job definition and schedules |
Uses HTTPS calls to Talend Cloud service to get configuration information and pipeline definition and schedules |
Talend Help Center documentation:
When attempting to execute the automatic installer.exe for Remote Engine, on Windows Server 2019, it fails with the error:
Error running C:\TalendRemoteEngine/bin/client.bat -a 8104 -h localhost -u tadmin "feature:install wrapper"
When attempting to run the Remote Engine manually by executing the trun command in the bin directory of the Remote Engine installation, the following error occurs:
The installer.exe itself can cause the error during the automatic run of the Remote Engine.
The error caused during the manual run of Remote Engine occurs when the JAVA_HOME and PATH environment variables are not set up correctly on the machine where this is happening and can cause the batch files to fail when starting.
The best way to avoid the error caused during the automatic run of the Remote Engine is to clear the existing Remote Engine installation and install it again manually with 7-Zip.
To avoid the error caused during the manual run of Remote Engine, set the JAVA_HOME and PATH environment variables according to the Setting up JAVA_HOME instructions available in Talend Cloud Installation Guide for Windows.
Running a Talend Job using a key pair authentication for Snowflake fails with the exception:
Starting job Snowflake_CreateTable at 09:21 19/07/2021. [statistics] connecting to socket on port 3725 [statistics] connected Exception in component tDBConnection_2 (Snowflake_CreateTable) java.lang.RuntimeException: java.io.IOException: Missing Keystore location at edw_demo.snowflake_createtable_0_1.Snowflake_CreateTable.tDBConnection_2Process(Snowflake_CreateTable.java:619) at edw_demo.snowflake_createtable_0_1.Snowflake_CreateTable.runJobInTOS(Snowflake_CreateTable.java:3881) at edw_demo.snowflake_createtable_0_1.Snowflake_CreateTable.main(Snowflake_CreateTable.java:3651) [FATAL] 09:21:38 edw_demo.snowflake_createtable_0_1.Snowflake_CreateTable- tDBConnection_2 java.io.IOException: Missing Keystore location java.lang.RuntimeException: java.io.IOException: Missing Keystore location at edw_demo.snowflake_createtable_0_1.Snowflake_CreateTable.tDBConnection_2Process(Snowflake_CreateTable.java:619) [classes/:?] at edw_demo.snowflake_createtable_0_1.Snowflake_CreateTable.runJobInTOS(Snowflake_CreateTable.java:3881) [classes/:?] at edw_demo.snowflake_createtable_0_1.Snowflake_CreateTable.main(Snowflake_CreateTable.java:3651) [classes/:?]
The Keystore path is not configured correctly at the Job or Studio level before connecting to Snowflake on the metadata and using the same metadata connection in the Jobs.
To use key pair authentication for Snowflake, they Keystone settings must be configured in Talend Studio before connecting to Snowflake.
Perform one of the following options.
Update the appropriate Studio initialization file (Talend-Studio-win-x86_64.ini,Talend-Studio-linux-gtk-x86_64.ini,or Talend-Studio-macosx-cocoa.ini depending on your operating system), with the following settings:
-Djavax.net.ssl.keyStore={yourPathToKeyStore} -Djavax.net.ssl.keyStoreType={PKCS12}/{JKS} -Djavax.net.ssl.keyStorePassword={keyStorePassword}
Update the Keystore configuration in Studio SSL preferences with the required Path, Password, and Keystore Type.
Add the Key Alias to the Snowflake metadata.
Update the tSetKeystore components in your Job, if you plan to run the Job when the target execution is local, Remote Engine, or JobServer (the versions do not matter). Before selecting the Key Pair option for the tSnowflakeConnection component, configure the key pair authentication on the Basic settings tab of the tSetKeystore component:
Select JKS from the TrustStore type pull-down list.
Enter " " in the TrustStore file field.
Clear the TrustStore password field.
Select the Need Client authentication check box.
Enter the path to the Keystore file in double quotation marks in the KeyStore file field.
Enter the Keystore password in the KeyStore password field.
The project's master pom.xml file (located in the project_name\poms\ folder) lists all versions for each Job, Route, or service, for example:
<modules> ... <module>jobs/process/testJob_0.1</module> <module>jobs/process/testJob_0.2</module> <module>jobs/process/testJob_0.3</module> <module>jobs/process/testJob_0.4</module> ... </modules>
Is there is a way to have the project's master pom.xml file list only the latest version of each Job, Route, or service?
Yes. In Studio navigate to File > Edit Project properties > Build > Maven, then in the Filter to use to generate poms field enter version=latest. Click Force full re-synchronize poms then click Apply and Close.
Using this process on the example file in the question above returns a pom.xml file like this:
<modules> ... <module>jobs/process/testJob_0.4</module> ... </modules>
You can also achieve this from the Talend CommandLine by entering the following command:
regenerateAllPoms -if (version=-1.-1)
You may want to upgrade your Talend DI version, but require several versions to run on your machine simultaneously. The different versions will run on different JVM versions, so using the global JAVA_HOME variable is not an option. You must point the different DI elements to specific Java installs.
-vm
JDK path
Your updated file might look like this:
-vm
C:\Program Files\Java\jdk1.8.0_101\bin
-vmargs
-Xms512m
-Xmx4G
-Dfile.encoding=UTF-8
wrapper.java.command = C:/Java/jre1.8.0_101/bin/java.exe
wrapper.java.command = C:/Java/jre1.8.0_101/bin/java.exe
tomcat8w.exe //ES//talend-tac-6.2.1
Talend Data Integration version 6.21.
Since Talend JDBC components start using new tcompv0 framework, we might get this error when using merge connector of tJDBCInput.
java.lang.RuntimeException: Missing output connection for component JDBC#Input
Scenario: using merge line to connect tJDBCInput with tUnite
Temp Workaround: add an intermediate component javajet between tDBInput and tUnite
Permanent solution: install R2023-11v2
URL: https://update.talend.com/Studio/8/updates/R2023-11v2/
Configure UserA to be a member of groupA.
Configure UserB to be a member of groupB.
Configure groupA with the Default Configuration, ConfigurationA.
Configure groupB with the Default Configuration, ConfigurationB.
Ensure the View Restricted role for the Repository's main folder is set to the Everyone group.
Configure the ProjectA folder with the View Restricted object role set to groupA.
Configure the ProjectB folder with the View Restricted object role set to groupB.
Log in as userA and make sure you don't see ProjectB.
Log in as UserB and make sure you don't see ProjectA.
-For the tFileInputExcel dynamic, It needs the first line to guess the schema.
-The example job source Excel didn't set a real header. Please Add tJavaFlex to transform Dynamic metadata with:
To the start code:
boolean isFirst = true;
To the main code:
if(isFirst) { isFirst = false; Dynamic newDyn = row1.newColumn.clone(false); for(DynamicMetadata meta : newDyn.metadatas) { // reset column name, String newColumnName = "field"+meta.getColumnPosition(); meta.setName(newColumnName); meta.setDbName(newColumnName); System.out.println("New dynamic field name: '"+ meta.getDbName()+"' "); } row2.newColumn = newDyn; }After that, the job works.
Problem: the corresponding item "publish“ in the drop-down menu is missing
Solution: Go to "General" in the Project setting and install it from "Activate/Deactivate features" pane
<dbType type="FLOAT">
<talendType type="id_Float" default="true" />