Hi Olo, Please if you could try to execute your project by command line (main class name example: TestMyFlightConsumer)
$ cd <wks> $ export JAVA_HOME=/Library/Java/JavaVirtualMachines/zulu-17.jdk/Contents/Home $ java --version openjdk 17.0.3 2022-04-19 LTS OpenJDK Runtime Environment Zulu17.34+19-CA (build 17.0.3+7-LTS) OpenJDK 64-Bit Server VM Zulu17.34+19-CA (build 17.0.3+7-LTS, mixed mode, sharing) $ mvn -q dependency:build-classpath -DincludeTypes=jar -Dmdep.outputFile=localtest.cp.tmp $ javac --add-opens=java.base/java.nio=ALL-UNNAMED src/main/java/TestMyFlightConsumer.java --class-path `cat localtest.cp.tmp`:target/classes $ java --add-opens=java.base/java.nio=ALL-UNNAMED --class-path `cat localtest.cp.tmp`:target/classes TestMyFlightConsumer Please let us know what errors you see now. David El lun, 18 jul 2022 a las 12:41, Olo Sawyerr (<[email protected]>) escribió: > Hi, > > I'm using Java 17. But compiled to target JDK 11 binary. > > /Users/olo/Library/Java/JavaVirtualMachines/azul-17.0.3/ > > Strange thing is that the *org.apache.arrow.memory.util.MemoryUtil *class > appears in the debugger. But when it calls MemoryUtil.directBuffer(address, > length) it gives the java.lang.NoClassDefFoundError > > Yes I'm also passing the flags - > > --add-opens=java.base/java.nio=ALL-UNNAMED > > Regards, > > Olo > > ------------------------------ > *From:* David Li <[email protected]> > *Sent:* 18 July 2022 18:01 > *To:* dl <[email protected]> > *Subject:* Re: [JAVA] java.lang.NoClassDefFoundError: Could not > initialize class org.apache.arrow.memory.util.MemoryUtil > > Hi, > > It's specifically "could not initialize class", is there other output? > > Most likely I'd guess you're on Java 9+, are all the necessary flags > passed to java to enable unsafe memory on this version? > https://arrow.apache.org/docs/dev/java/install.html#java-compatibility > <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Farrow.apache.org%2Fdocs%2Fdev%2Fjava%2Finstall.html%23java-compatibility&data=05%7C01%7C%7C635738eb6d744d854e6d08da68df27ad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637937604889560404%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=C%2BwgSBfq0kf%2BXP06shkWtcFgTSIq6%2BWDUCD29idt%2FtQ%3D&reserved=0> > > -David > > On Mon, Jul 18, 2022, at 12:56, Olo Sawyerr wrote: > > Hi, > > I'm trying to use arrow flight and keep getting this exception below when > calling flightClient.getStream() - *java.lang.NoClassDefFoundError: Could > not initialize class org.apache.arrow.memory.util.MemoryUtil* > > It's quite odd because I have *arrow-memory-core* defined in my pom. I'm > using v8.0.0. Any ideas what this could be? I'm running this in IntelliJ. > > *Code:* > > try (var allocator = new RootAllocator(); var flightClient = > FlightClient.*builder*(allocator, location).build()) { > var flightStream = flightClient.getStream(ticket); > if (flightStream.next()) { > retval = flightStream.getRoot(); > } > } > > > *StackTrace:* > > 2022-07-18T17:29:58.075+0100 INFO grpc-default-executor-11 stderr > *java.lang.NoClassDefFoundError: > Could not initialize class org.apache.arrow.memory.util.MemoryUtil* > > 2022-07-18T17:29:58.076+0100 INFO grpc-default-executor-11 stderr at > org.apache.arrow.memory.ArrowBuf.getDirectBuffer(ArrowBuf.java:228) > > 2022-07-18T17:29:58.077+0100 INFO grpc-default-executor-11 stderr at > org.apache.arrow.memory.ArrowBuf.nioBuffer(ArrowBuf.java:223) > > 2022-07-18T17:29:58.077+0100 INFO grpc-default-executor-11 stderr at > org.apache.arrow.flight.grpc.GetReadableBuffer.readIntoBuffer(GetReadableBuffer.java:91) > > 2022-07-18T17:29:58.078+0100 INFO grpc-default-executor-11 stderr at > org.apache.arrow.flight.ArrowMessage.frame(ArrowMessage.java:319) > > 2022-07-18T17:29:58.079+0100 INFO grpc-default-executor-11 stderr at > org.apache.arrow.flight.ArrowMessage.access$100(ArrowMessage.java:68) > > 2022-07-18T17:29:58.079+0100 INFO grpc-default-executor-11 stderr at > org.apache.arrow.flight.ArrowMessage$ArrowMessageHolderMarshaller.parse(ArrowMessage.java:551) > > 2022-07-18T17:29:58.079+0100 INFO grpc-default-executor-11 stderr at > org.apache.arrow.flight.ArrowMessage$ArrowMessageHolderMarshaller.parse(ArrowMessage.java:536) > > 2022-07-18T17:29:58.079+0100 INFO grpc-default-executor-11 stderr at > io.grpc.MethodDescriptor.parseResponse(MethodDescriptor.java:284) > > 2022-07-18T17:29:58.080+0100 INFO grpc-default-executor-11 stderr at > io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1MessagesAvailable.runInternal(ClientCallImpl.java:661) > > 2022-07-18T17:29:58.080+0100 INFO grpc-default-executor-11 stderr at > io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1MessagesAvailable.runInContext(ClientCallImpl.java:646) > > 2022-07-18T17:29:58.080+0100 INFO grpc-default-executor-11 stderr at > io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37) > > 2022-07-18T17:29:58.081+0100 INFO grpc-default-executor-11 stderr at > io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133) > > 2022-07-18T17:29:58.081+0100 INFO grpc-default-executor-11 stderr at > java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) > > 2022-07-18T17:29:58.081+0100 INFO grpc-default-executor-11 stderr at > java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) > > >
