Compatible Java Environments
The following tables provide information on the recommended Java Environment for Talend 8.0.1-R2026-06 and later.
If you are using Talend 8.0 products that were not patched nor updated with the February 2025 updates or later ones, see Compatible Java Environment before February 2025.
The supported Java platforms are OpenJDK and Oracle JDK. The recommended distribution for OpenJDK is Zulu.
In the following documentation:
- Recommended: designates an environment recommended by Qlik based on experience and customer usage.
- Supported: designates a supported environment for use with the listed component or service.
- Supported with limitations: designates an environment that is supported by Qlik but with certain conditions explained in notes.
Supported Java versions for launching Talend Studio
The supported Java versions to launch Talend Studio are different for 8.0 and 7.3.
| Java version (OpenJDK or Oracle JDK) | Support type |
|---|---|
| 21 | Supported from the R2025-09 monthly patch and required from the R2026-06 monthly patch. |
| Java version (OpenJDK or Oracle JDK) | Support type | Notes |
|---|---|---|
| 11 | Supported | When running Oracle 11, Talend Studio should conform to JDK Compiler Compliance Level 11 (default). |
| 8 | Supported | When running Oracle 8, Talend Studio should conform to JDK Compiler Compliance Level 1.8 (default). If the installed JDK version is lower than 1.8.0_161, you need to also install the additional resource Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files. This is also applicable to the execution of standalone Jobs. |
Supported Java versions for launching Talend Server modules
| Talend Server Module | Java version (OpenJDK or Oracle JDK) | Note |
|---|---|---|
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Supported with limitations:
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The support for artifact executions with Java 21 starts from v2.14.2. |
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For configuration steps to run artifacts with specific Java versions on Talend Remote Engine, see Configuring Java versions to run Jobs or Microservices.
Supported Java versions for running Routes, Data Integration Jobs, and Data Service Jobs with Talend Studio 8.0 R2026-06 and later
- Data Integration Jobs and Routes are built with Java 17 or Java 21 compliance.
- Third-party libraries that use Java 21 are not supported.
The following table shows in which Java environments the corresponding item can be executed:
| Java version for execution | Support type |
|---|---|
| 21 | Supported |
| 17 | Supported Note that Routines compliance can be set up to Java 8 or 17. |
| Java version for execution | Support type |
|---|---|
| 21 | Supported |
| 17 | Supported |
Cloud Engine: default Java behavior for task execution
Cloud Engine uses Java 21 as the default Java version for executing tasks. However, it has adopted an adaptive mode to automatically select Java versions based on those tasks' Java compatibility levels.
Supported Java versions for running Big Data Jobs in Big Data clusters
Big Data Jobs are built with Java 8 compliance in Talend Studio. The built artifacts include add-opens parameters to ensure compatibility with Java 17 and Java 21 runtimes in Talend environments. However, when deployed to a big data cluster, the Job executes with the Java version running on that cluster, not with the build Java version.
This build-once, run-anywhere model allows you to compile a Job once in Talend Studio with Java 8 compliance and deploy it to clusters running different Java versions. However, you must ensure the target cluster Java version is compatible with your Job's Routines.
Routines compliance can be set to Java 8, 17, or 21. However, Routines compiled with Java 21 compliance are not compatible with Big Data Jobs. The Routines compliance level must be compatible with the cluster's Java version. For more information, see Setting up the Java version to build artifacts in Talend Studio.
The following table shows recommended distributions and the Java versions they support for running Big Data Jobs and Spark applications. Choose the cluster distribution and Java version that matches your environment and Routines compliance level.
| Distribution | Java version in cluster | Recommended Routines compliance | Support status |
|---|---|---|---|
| Hadoop 3.x | 8 | Java 8 | Supported |
| Hadoop 3.x | 11 | Java 8 | Supported |
| Hadoop 3.x | 17 | Java 8 or 17 | Supported |
| Cloudera CDH 6.x | 8 | Java 8 | Supported |
| Cloudera CDH 6.x | 11 | Java 8 | Supported |
| Spark 3.x (standalone cluster) | 8 | Java 8 | Supported |
| Spark 3.x (standalone cluster) | 11 | Java 8 | Supported |
| Spark 3.x (standalone cluster) | 17 | Java 8 or 17 | Supported |
| Spark 4.0 (standalone cluster) | 17 | Java 8 or 17 | Supported |
Big Data Jobs execution compatibility examples
The following table shows example scenarios of Big Data Job deployment to different cluster environments.
| Cluster distribution | Cluster Java version | Routines compliance | Can execute? |
|---|---|---|---|
| Hadoop 3.x | 8 | Java 8 | Yes |
| Hadoop 3.x | 11 | Java 8 | Yes |
| Cloudera CDH 6.x | 11 | Java 17 | No – Cluster does not support Java 17 |