Running Apache Ignite on OpenJDK 15, 16 and 17

The current docs state¹ that the following but incorrect JVM flags and options must be given.

--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED
--add-exports=java.base/sun.nio.ch=ALL-UNNAMED
--add-exports=java.management/com.sun.jmx.mbeanserver=ALL-UNNAMED
--add-exports=jdk.internal.jvmstat/sun.jvmstat.monitor=ALL-UNNAMED
--add-exports=java.base/sun.reflect.generics.reflectiveObjects=ALL-UNNAMED
--add-opens=jdk.management/com.sun.management.internal=ALL-UNNAMED
--illegal-access=permit

However these options result in the following errors on OpenJDK 17.

OpenJDK 64-Bit Server VM warning: Ignoring option --illegal-access=permit; support was removed in 17.0
Exception in thread "main" java.lang.ExceptionInInitializerError
    at org.apache.ignite.internal.util.IgniteUtils.(IgniteUtils.java:878)
    at org.apache.ignite.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder.(TcpDiscoveryMulticastIpFinder.java:95)
    at Main.main(Main.java:25)
Caused by: java.lang.RuntimeException: java.nio.DirectByteBuffer.address field is unavailable.
    at org.apache.ignite.internal.util.GridUnsafe$2.run(GridUnsafe.java:1570)
    at org.apache.ignite.internal.util.GridUnsafe$2.run(GridUnsafe.java:1557)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
    at org.apache.ignite.internal.util.GridUnsafe.bufferAddressOffset(GridUnsafe.java:1557)
    at org.apache.ignite.internal.util.GridUnsafe.(GridUnsafe.java:109)
    ... 3 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field long java.nio.Buffer.address accessible: module java.base does not "opens java.nio" to unnamed module @f2a0b8e
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
    at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
    at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
    at org.apache.ignite.internal.util.GridUnsafe$2.run(GridUnsafe.java:1562)
    ... 7 more

Fix

In order to run Ignite on OpenJDK with higher versions than 14, the following and correct JVM flags² are required to run. Tested with Apache Ignite 2.13 and OpenJDK 17.0.1.

--add-opens=java.base/jdk.internal.misc=ALL-UNNAMED 
--add-opens=java.base/sun.nio.ch=ALL-UNNAMED 
--add-opens=java.base/sun.nio.ch=ALL-UNNAMED 
--add-opens=java.management/com.sun.jmx.mbeanserver=ALL-UNNAMED 
--add-opens=jdk.internal.jvmstat/sun.jvmstat.monitor=ALL-UNNAMED 
--add-opens=java.base/sun.reflect.generics.reflectiveObjects=ALL-UNNAMED 
--add-opens=jdk.management/com.sun.management.internal=ALL-UNNAMED 
--add-opens=java.base/java.io=ALL-UNNAMED 
--add-opens=java.base/java.nio=ALL-UNNAMED 
--add-opens=java.base/java.util=ALL-UNNAMED 
--add-opens=java.base/java.lang=ALL-UNNAMED 

OpenJDK 18

As of writing this post, the current latest Ignite version 2.13 does not support OpenJDK 18, but a fix is planned in the future 2.14 release³ (mailing list reference⁴).  

SEVERE: Failed to stop component (ignoring): GridManagerAdapter [enabled=true, name=o.a.i.i.managers.deployment.GridDeploymentManager]
java.lang.ClassCastException: class java.io.ObjectInputStream$Caches$1 cannot be cast to class java.util.Map (java.io.ObjectInputStream$Caches$1 and java.util.Map are in module java.base of loader 'bootstrap')
    at org.apache.ignite.internal.managers.deployment.GridDeploymentStoreAdapter.clearSerializationCache(GridDeploymentStoreAdapter.java:151)
    at org.apache.ignite.internal.managers.deployment.GridDeploymentStoreAdapter.clearSerializationCaches(GridDeploymentStoreAdapter.java:120)
    at org.apache.ignite.internal.managers.deployment.GridDeploymentLocalStore.undeploy(GridDeploymentLocalStore.java:565)
    at org.apache.ignite.internal.managers.deployment.GridDeploymentLocalStore.stop(GridDeploymentLocalStore.java:101)
    at org.apache.ignite.internal.managers.deployment.GridDeploymentManager.storesStop(GridDeploymentManager.java:630)
    at org.apache.ignite.internal.managers.deployment.GridDeploymentManager.stop(GridDeploymentManager.java:137)
    at org.apache.ignite.internal.IgniteKernal.stop0(IgniteKernal.java:1928)
    at org.apache.ignite.internal.IgniteKernal.stop(IgniteKernal.java:1806)
    at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.stop0(IgnitionEx.java:2382)
    at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.stop(IgnitionEx.java:2205)
    at org.apache.ignite.internal.IgnitionEx.stop(IgnitionEx.java:350)
    at org.apache.ignite.Ignition.stop(Ignition.java:230)
    at org.apache.ignite.internal.IgniteKernal.close(IgniteKernal.java:2776)
    at Main.main(Main.java:45)