Niels Basjes created FLINK-18455:
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Summary: Building with JDK 9+ leads to problems on JDK 8
Key: FLINK-18455
URL: https://issues.apache.org/jira/browse/FLINK-18455
Project: Flink
Issue Type: Bug
Components: Build System
Affects Versions: 1.10.1
Reporter: Niels Basjes
I was working on some changes in Flink and on my workstation I have also JDK 14
installed.
When Flink is built using JDK > 8 and then run using JDK the problem surfaces
that the code crashes with the exception like this:
{code:java}
java.lang.NoSuchMethodError:
java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer;
at
org.apache.flink.core.memory.DataOutputSerializer.wrapAsByteBuffer(DataOutputSerializer.java:65)
~[classes/:?]
at
org.apache.flink.runtime.io.network.api.serialization.SpanningRecordSerializer.<init>(SpanningRecordSerializer.java:50)
~[classes/:?]
at
org.apache.flink.runtime.io.network.api.writer.RecordWriter.<init>(RecordWriter.java:98)
~[classes/:?]
at
org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter.<init>(ChannelSelectorRecordWriter.java:50)
~[classes/:?]
at
org.apache.flink.runtime.io.network.api.writer.RecordWriterBuilder.build(RecordWriterBuilder.java:53)
~[classes/:?]
{code}
This is a problem in the way JDK 9+ generates the code that is incompatible
with using the JDK 8 runtime, even if during the build it was indicated that
JRE 8 would be the target.
I have found several projects have ran into the exact same problem:
- [https://issues.apache.org/jira/browse/MRESOLVER-67]
- [https://github.com/eclipse/jetty.project/issues/3244]
- [https://github.com/netty/netty/issues/9880]
- [https://github.com/apache/felix/pull/114]
As indicated in the mentioned Jetty ticket the solution is quite simple:
bq. The solution is to cast the {{ByteBuffer}} to {{Buffer}} when calling those
methods: {code}((Buffer)byteBuffer).position(0);{code}
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