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Posted to issues@beam.apache.org by "Kenneth Knowles (Jira)" <ji...@apache.org> on 2020/10/26 22:49:00 UTC

[jira] [Commented] (BEAM-11080) Beam Java SNAPSHOTS should not be built with Java 11

    [ https://issues.apache.org/jira/browse/BEAM-11080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17221021#comment-17221021 ] 

Kenneth Knowles commented on BEAM-11080:
----------------------------------------

Seems like the answer may be https://stackoverflow.com/questions/15492948/javac-source-and-target-options

> Beam Java SNAPSHOTS should not be built with Java 11
> ----------------------------------------------------
>
>                 Key: BEAM-11080
>                 URL: https://issues.apache.org/jira/browse/BEAM-11080
>             Project: Beam
>          Issue Type: Improvement
>          Components: build-system
>    Affects Versions: 2.26.0
>            Reporter: Ismaël Mejía
>            Priority: P1
>
> We have a series of jobs that check forwards compatibility of our apps with the daily Beam SNAPSHOTs, and those jobs are failing since two days ago because a compatibility issue:
> {code}
> org.apache.beam.sdk.Pipeline$PipelineExecutionException: java.lang.NoSuchMethodError: java.nio.ByteBuffer.flip()Ljava/nio/ByteBuffer;
>  at org.apache.beam.runners.direct.DirectRunner$DirectPipelineResult.waitUntilFinish (DirectRunner.java:368)
>  at org.apache.beam.runners.direct.DirectRunner$DirectPipelineResult.waitUntilFinish (DirectRunner.java:336)
>  at org.apache.beam.runners.direct.DirectRunner.run (DirectRunner.java:216)
> {code}
> This can be reproduced easily with a machine with only Java 8 and using Beam's archetype + SNAPSHOTs
> {code}
> mvn archetype:generate \
>  -DarchetypeGroupId=org.apache.beam \
>  -DarchetypeArtifactId=beam-sdks-java-maven-archetypes-examples \
>  -DarchetypeVersion=2.26.0-SNAPSHOT \
>  -DgroupId=org.example \
>  -DartifactId=word-count-beam \
>  -Dversion="0.1" \
>  -Dpackage=org.apache.beam.examples \
>  -DinteractiveMode=false
> cd word-count-beam
> mvn clean compile exec:java -Dexec.mainClass=org.apache.beam.examples.WordCount -Dexec.args="--inputFile=pom.xml --output=out"
> {code}



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