Supported Java Versions
- Apache Hadoop 3.x now supports only Java 8
- Apache Hadoop from 2.7.x to 2.x support Java 7 and 8
- Java 11 support is now in progress:
- trunk (3.3.0-SNAPSHOT) supports Java 11 as runtime: HADOOP-15338 - Getting issue details... STATUS
- Compiling Hadoop with Java 11 is not supported: HADOOP-16795 - Getting issue details... STATUS
Supported JDKs/JVMs
- Now Apache Hadoop is using OpenJDK for the build environment, and that's why OpenJDK should be supported in the community.
- Other jdks/jvms should work well. If you find they don't work as expected, please file a JIRA.
Java Incompatible Changes
This document is for users who upgrade Java version of their Hadoop cluster. It documents the incompatible changes of Java that affects Apache Hadoop.
| Versions | Incompatible changes | Related JIRAs |
|---|---|---|
| 1.8.0_242 | JDK-8237177 changed sun.nio.ch.SocketAdaptor from public to package-private. TestIPC#testRTEDuringConnectionSetup is affected. | HADOOP-15787 - Getting issue details... STATUS |
| 1.8.0_191 | All DES cipher suites were disabled by JDK-8208350. If you are explicitly using DEC cipher suites, you need to change cipher suite to a strong one. | HADOOP-16016 - Getting issue details... STATUS |
| 1.8.0_171 | In Apache Hadoop 2.7.0 to 2.7.6, 2.8.0 to 2.8.4, 2.9.0 to 2.9.1, 3.0.0 to 3.0.2, and 3.1.0, KMS fails by java.security.UnrecoverableKeyException due to Enhanced KeyStore Mechanisms. You need to set the system property "jceks.key.serialFilter" to the following value to avoid this error: java.lang.Enum;java.security.KeyRep;java.security.KeyRep$Type;javax.crypto.spec.SecretKeySpec;org.apache.hadoop.crypto.key.JavaKeyStoreProvider$KeyMetadata;!*" | HADOOP-15473 - Getting issue details... STATUS |