John, Is this with the current develop branch of Geode or a previous release. Develop does not use reflections anymore in the BufferPool. If there is a specific version you are locked into we could look at backporting this to a patch release.
See https://github.com/apache/geode/pull/6207 -Jake On May 5, 2021, at 9:19 AM, John Blum <jb...@vmware.com<mailto:jb...@vmware.com>> wrote: Hi Dan- Thanks for the tip. I can certainly give that a try and see what results I get. It is quite possibly a problem for non-internal JDK, or even non-JDK [protected] classes as well. I ran into a similar problems inside of SDG itself, which turned out to be an old Java bug, which did not occur in Java 15, 14 or even 11 that we have tested on, but resurfaced in 16. FYR: https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8227415<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugs.java.com%2Fbugdatabase%2Fview_bug.do%3Fbug_id%3D8227415&data=04%7C01%7Cjabarrett%40vmware.com%7C938f29460c3243d18be508d90fe1956d%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C0%7C0%7C637558283827165906%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=dRsjzg58u2Osou%2BPmBQfNd%2B4J1UwyJ3%2BqfXH6kKU6k4%3D&reserved=0> Essentially, SDG failed due to: Caused by: java.lang.IllegalAccessError: class org.springframework.data.gemfire.config.annotation.AbstractCacheConfiguration$$Lambda$634/0x0000000800f1fa50 tried to access protected method 'boolean org.springframework.data.gemfire.config.annotation.support.AbstractAnnotationConfigSupport.hasValue(java.lang.Number) And... (org.springframework.data.gemfire.config.annotation.AbstractCacheConfiguration$$Lambda$634/0x0000000800f1fa50 and org.springframework.data.gemfire.config.annotation.support.AbstractAnnotationConfigSupport are in unnamed module of loader 'app') SDG's o.s.d.g.config.annotation.AbstractCacheConfiguration class extends the o.s.d.g.config.annotation.support.AbstractAnnotationConfigSupport class. These classes are in a SDG named module. So, I am not sure I agree with Java, or at least fully understand in this case, but it seems Java 16 may have added additional restrictions. Anyway, I not trying to say SDG is not in error or that Java is necessarily wrong, but there is a definitively a difference between Java 15 and 16 and that this problem seems to stretch beyond Java (internal) types, FYI. Regards, John ________________________________ From: Dan Smith <dasm...@vmware.com<mailto:dasm...@vmware.com>> Sent: Wednesday, May 5, 2021 9:05 AM To: user@geode.apache.org<mailto:user@geode.apache.org> <user@geode.apache.org<mailto:user@geode.apache.org>> Subject: Re: JDK 16 Support? You might be able to work around this for the moment using something like --add-opens java.base/java.nio=ALL-UNNAMED when you start the JVM. I do agree we should not be using these internal JDK classes for our buffer pool. Maybe someone who knows more about that code can share why we are doing this. -Dan ________________________________ From: John Blum <jb...@vmware.com<mailto:jb...@vmware.com>> Sent: Wednesday, May 5, 2021 7:57 AM To: geode <d...@geode.apache.org<mailto:d...@geode.apache.org>>; user@geode.apache.org<mailto:user@geode.apache.org> <user@geode.apache.org<mailto:user@geode.apache.org>> Subject: JDK 16 Support? What is the plan to support Java 16 for Apache Geode? Timeframe? Running Apache Geode on a Java 16 Runtime produces errors like the following: - org.apache.geode.InternalGemFireException: unable to retrieve underlying byte buffer - at org.apache.geode.internal.net.BufferPool.getPoolableBuffer(BufferPool.java:346) - at org.apache.geode.internal.net.BufferPool.releaseBuffer(BufferPool.java:310) - at org.apache.geode.internal.net.BufferPool.releaseSenderBuffer(BufferPool.java:213) - at org.apache.geode.internal.tcp.MsgStreamer.release(MsgStreamer.java:100) - at org.apache.geode.internal.tcp.MsgStreamer.writeMessage(MsgStreamer.java:256) - at org.apache.geode.distributed.internal.direct.DirectChannel.sendToMany(DirectChannel.java:306) - at org.apache.geode.distributed.internal.direct.DirectChannel.sendToOne(DirectChannel.java:182) - at org.apache.geode.distributed.internal.direct.DirectChannel.send(DirectChannel.java:511) - at org.apache.geode.distributed.internal.DistributionImpl.directChannelSend(DistributionImpl.java:346) - at org.apache.geode.distributed.internal.DistributionImpl.send(DistributionImpl.java:291) - at org.apache.geode.distributed.internal.ClusterDistributionManager.sendViaMembershipManager(ClusterDistributionManager.java:2050) - at org.apache.geode.distributed.internal.ClusterDistributionManager.sendOutgoing(ClusterDistributionManager.java:1978) - at org.apache.geode.distributed.internal.ClusterDistributionManager.sendMessage(ClusterDistributionManager.java:2015) - at org.apache.geode.distributed.internal.ClusterDistributionManager.putOutgoing(ClusterDistributionManager.java:1083) - at org.apache.geode.distributed.internal.StartupMessage.process(StartupMessage.java:279) - at org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:376) - at org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:441) - at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) - at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) - at org.apache.geode.distributed.internal.ClusterOperationExecutors.runUntilShutdown(ClusterOperationExecutors.java:441) - at org.apache.geode.distributed.internal.ClusterOperationExecutors.doWaitingThread(ClusterOperationExecutors.java:410) - at org.apache.geode.logging.internal.executors.LoggingThreadFactory.lambda$newThread$0(LoggingThreadFactory.java:119) - at java.base/java.lang.Thread.run(Thread.java:831) - Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make public java.lang.Object java.nio.DirectByteBuffer.attachment() accessible: module java.base does not "opens java.nio" to unnamed module @40f9161a - at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357) - at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) - at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) - at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) - at org.apache.geode.internal.net.BufferPool.getPoolableBuffer(BufferPool.java:343) - ... 22 common frames omitted - 2021-04-30 14:57:13,638 INFO ributed.internal.membership.gms.Services: 606 - received leave request from 10.99.199.28(CacheNotUsingSharedConfigurationIntegrationTest:29149)<v1>:41001 for 10.99.199.28(CacheNotUsingSharedConfigurationIntegrationTest:29149)<v1>:41001 - 2021-04-30 14:57:13,640 INFO ributed.internal.membership.gms.Services: 617 - JoinLeave.processMessage(LeaveRequestMessage) invoked. isCoordinator=true; isStopping=false; cancelInProgress=false - 2021-04-30 14:57:13,647 ERROR xecutors.LoggingUncaughtExceptionHandler: 92 - Uncaught exception in thread Thread[P2P message reader for 10.99.199.28(CacheNotUsingSharedConfigurationIntegrationTest:29149)<v1>:41001 shared unordered uid=1 local port=53039 remote port=64063,10,main] - org.apache.geode.InternalGemFireException: unable to retrieve underlying byte buffer - at org.apache.geode.internal.net.BufferPool.getPoolableBuffer(BufferPool.java:346) - at org.apache.geode.internal.net.BufferPool.releaseBuffer(BufferPool.java:310) - at org.apache.geode.internal.net.BufferPool.releaseReceiveBuffer(BufferPool.java:217) - at org.apache.geode.internal.tcp.Connection.releaseInputBuffer(Connection.java:1512) - at org.apache.geode.internal.tcp.Connection.run(Connection.java:1495) - at java.base/java.lang.Thread.run(Thread.java:831) - Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make public java.lang.Object java.nio.DirectByteBuffer.attachment() accessible: module java.base does not "opens java.nio" to unnamed module @40f9161a - at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357) - at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) - at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) - at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) - at org.apache.geode.internal.net.BufferPool.getPoolableBuffer(BufferPool.java:343) - ... 5 common frames omitted - 2021-04-30 14:57:13,651 ERROR xecutors.LoggingUncaughtExceptionHandler: 92 - Uncaught exception in thread Thread[P2P handshake reader@53e57a03-1,5,main] - org.apache.geode.InternalGemFireException: unable to retrieve underlying byte buffer - at org.apache.geode.internal.net.BufferPool.getPoolableBuffer(BufferPool.java:346) - at org.apache.geode.internal.net.BufferPool.releaseBuffer(BufferPool.java:310) - at org.apache.geode.internal.net.BufferPool.releaseReceiveBuffer(BufferPool.java:217) - at org.apache.geode.internal.tcp.Connection.releaseInputBuffer(Connection.java:1512) - at org.apache.geode.internal.tcp.Connection.run(Connection.java:1495) - at java.base/java.lang.Thread.run(Thread.java:831) - Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make public java.lang.Object java.nio.DirectByteBuffer.attachment() accessible: module java.base does not "opens java.nio" to unnamed module @40f9161a - at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357) - at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) - at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) - at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) - at org.apache.geode.internal.net.BufferPool.getPoolableBuffer(BufferPool.java:343) - ... 5 common frames omitted Regards, -John
