I filed https://issues.apache.org/jira/browse/ARROW-17113.
On Mon, Jul 18, 2022, at 17:22, Jacques Nadeau wrote: > For general reference I believe NoClassDefFoundError also occurs when the > static initialization block of the required class fails to initialize. In > general, it's best to wrap any static initialization block with a failure > catch that prints/logs the issues before throwing so you aren't struggling > like this. We should open a ticket to make this change if we a place where > that isn't happening. It looks like MemoryUtil's initialization block doesn't > handle this. (It tries to throw.) I believe that in some cases (all cases?) > those throws are swallowed and the NoClassDefFoundError is thrown instead. > > On Mon, Jul 18, 2022 at 1:22 PM David Dali Susanibar Arce > <[email protected]> wrote: >> 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) >>>
