[
https://issues.apache.org/jira/browse/FLINK-18455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17148493#comment-17148493
]
Niels Basjes commented on FLINK-18455:
--------------------------------------
This seems like the better solution:
[https://github.com/eclipse/jetty.project/issues/3244#issuecomment-495322586]
Essentially when building with JDK 9+ specify "release 8" should fix this issue.
> 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
> Priority: Major
>
> 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 8 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:
> {quote}The solution is to cast the {{ByteBuffer}} to {{Buffer}} when calling
> those methods:
> {code:java}
> ((Buffer)byteBuffer).position(0);{code}
>
> {quote}
>
>
>
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
