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https://issues.apache.org/jira/browse/CASSANDRA-17850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17700409#comment-17700409
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Ekaterina Dimitrova commented on CASSANDRA-17850:
-------------------------------------------------
{quote}At least with Java 9+ we should be able to use the new {{ProcessHandle}}
API to get the PID
{quote}
Agreed, though this is not solution to the need to get FileDescriptor.fd and
sun.nio.ch.FileChannelImpl.fd without opening internals which we try to tackle
here. We still need to open the internals for those.
> Find a way to get FileDescriptor.fd and sun.nio.ch.FileChannelImpl.fd without
> opening internals
> -----------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-17850
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17850
> Project: Cassandra
> Issue Type: Improvement
> Components: Build
> Reporter: Ekaterina Dimitrova
> Priority: Normal
> Fix For: 5.x
>
>
> With Java 17 if we do not add below to the jvm17 server options:
> {code:java}
> --add-opens java.base/sun.nio.ch=ALL-UNNAMED
> --add-opens java.base/java.io=ALL-UNNAMED{code}
> we get on startup (considering I comment out the scripted UDFs and apply a
> few changes to the startup scripts):
> {code:java}
> ERROR [ScheduledTasks:1] 2022-08-23 12:29:25,652
> JVMStabilityInspector.java:68 - Exception in thread
> Thread[ScheduledTasks:1,5,ScheduledTasks]
> java.lang.AssertionError: java.lang.reflect.InaccessibleObjectException:
> Unable to make field private int java.io.FileDescriptor.fd accessible: module
> java.base does not "opens java.io" to unnamed module @11d8ae8b
> at
> org.apache.cassandra.utils.FBUtilities.getProtectedField(FBUtilities.java:801)
> at org.apache.cassandra.utils.NativeLibrary.<clinit>(NativeLibrary.java:84)
> at org.apache.cassandra.utils.TimeUUID$Generator.hash(TimeUUID.java:496)
> at org.apache.cassandra.utils.TimeUUID$Generator.makeNode(TimeUUID.java:474)
> at
> org.apache.cassandra.utils.TimeUUID$Generator.makeClockSeqAndNode(TimeUUID.java:452)
> at org.apache.cassandra.utils.TimeUUID$Generator.<clinit>(TimeUUID.java:368)
> at
> org.apache.cassandra.streaming.StreamingState.<clinit>(StreamingState.java:50)
> at org.apache.cassandra.streaming.StreamManager.<init>(StreamManager.java:257)
> at
> org.apache.cassandra.streaming.StreamManager.<clinit>(StreamManager.java:58)
> at org.apache.cassandra.service.StorageService.<init>(StorageService.java:376)
> at
> org.apache.cassandra.service.StorageService.<clinit>(StorageService.java:226)
> at
> org.apache.cassandra.locator.DynamicEndpointSnitch.updateScores(DynamicEndpointSnitch.java:274)
> at
> org.apache.cassandra.locator.DynamicEndpointSnitch$1.run(DynamicEndpointSnitch.java:91)
> at
> org.apache.cassandra.concurrent.ExecutionFailure$1.run(ExecutionFailure.java:133)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
> at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
> at
> java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:833)
> Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make
> field private int java.io.FileDescriptor.fd accessible: module java.base does
> not "opens java.io" to unnamed module @11d8ae8b
> 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.cassandra.utils.FBUtilities.getProtectedField(FBUtilities.java:796)
> ... 20 common frames omitted
> {code}
> and
> {code:java}
> ERROR [ScheduledTasks:1] 2022-08-23 12:31:18,443
> JVMStabilityInspector.java:68 - Exception in thread
> Thread[ScheduledTasks:1,5,ScheduledTasks]
> java.lang.AssertionError: java.lang.reflect.InaccessibleObjectException:
> Unable to make field private final java.io.FileDescriptor
> sun.nio.ch.FileChannelImpl.fd accessible: module java.base does not "opens
> sun.nio.ch" to unnamed module @4c012563
> at
> org.apache.cassandra.utils.FBUtilities.getProtectedField(FBUtilities.java:801)
> at org.apache.cassandra.utils.NativeLibrary.<clinit>(NativeLibrary.java:87)
> at org.apache.cassandra.utils.TimeUUID$Generator.hash(TimeUUID.java:496)
> at org.apache.cassandra.utils.TimeUUID$Generator.makeNode(TimeUUID.java:474)
> at
> org.apache.cassandra.utils.TimeUUID$Generator.makeClockSeqAndNode(TimeUUID.java:452)
> at org.apache.cassandra.utils.TimeUUID$Generator.<clinit>(TimeUUID.java:368)
> at
> org.apache.cassandra.streaming.StreamingState.<clinit>(StreamingState.java:50)
> at org.apache.cassandra.streaming.StreamManager.<init>(StreamManager.java:257)
> at
> org.apache.cassandra.streaming.StreamManager.<clinit>(StreamManager.java:58)
> at org.apache.cassandra.service.StorageService.<init>(StorageService.java:376)
> at
> org.apache.cassandra.service.StorageService.<clinit>(StorageService.java:226)
> at
> org.apache.cassandra.locator.DynamicEndpointSnitch.updateScores(DynamicEndpointSnitch.java:274)
> at
> org.apache.cassandra.locator.DynamicEndpointSnitch$1.run(DynamicEndpointSnitch.java:91)
> at
> org.apache.cassandra.concurrent.ExecutionFailure$1.run(ExecutionFailure.java:133)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
> at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
> at
> java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:833)
> Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make
> field private final java.io.FileDescriptor sun.nio.ch.FileChannelImpl.fd
> accessible: module java.base does not "opens sun.nio.ch" to unnamed module
> @4c012563
> 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.cassandra.utils.FBUtilities.getProtectedField(FBUtilities.java:796)
> ... 20 common frames omitted
> {code}
>
> *EDIT:*
> Also adding
> {code:java}
> --add-opens java.base/java.nio=ALL-UNNAMED{code}
> to prevent below error on startup with JDK17:
> {code:java}
> Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make
> field private final java.io.FileDescriptor java.nio.MappedByteBuffer.fd
> accessible: module java.base does not "opens java.nio" to unnamed module
> @934b6cb
> 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.cassandra.utils.SyncUtil.<clinit>(SyncUtil.java:58)
> ... 29 common frames omitted
> {code}
>
>
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