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https://issues.apache.org/jira/browse/YARN-6628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16018206#comment-16018206
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Haibo Chen commented on YARN-6628:
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In branch-2.8, find hadoop-dist -name "jackson-core*jar" returns
{code}
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/httpfs/tomcat/webapps/webhdfs/WEB-INF/lib/jackson-core-asl-1.9.13.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/kms/tomcat/webapps/kms/WEB-INF/lib/jackson-core-asl-1.9.13.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/mapreduce/lib/jackson-core-asl-1.9.13.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/tools/lib/jackson-core-2.2.3.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/tools/lib/jackson-core-asl-1.9.13.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/yarn/lib/jackson-core-2.2.3.jar
hadoop-dist/target/hadoop-2.8.2-SNAPSHOT/share/hadoop/yarn/lib/jackson-core-asl-1.9.13.jar
{code}
whereas in trunk, the result is
{code}
hadoop-dist/target/hadoop-3.0.0-alpha3-SNAPSHOT/share/hadoop/common/lib/jackson-core-2.7.8.jar
hadoop-dist/target/hadoop-3.0.0-alpha3-SNAPSHOT/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar
hadoop-dist/target/hadoop-3.0.0-alpha3-SNAPSHOT/share/hadoop/hdfs/lib/jackson-core-2.7.8.jar
hadoop-dist/target/hadoop-3.0.0-alpha3-SNAPSHOT/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar
{code}
> Unexpected jackson-core-2.2.3 dependency introduced
> ---------------------------------------------------
>
> Key: YARN-6628
> URL: https://issues.apache.org/jira/browse/YARN-6628
> Project: Hadoop YARN
> Issue Type: Bug
> Components: timelineserver
> Affects Versions: 2.8.1
> Reporter: Jason Lowe
> Priority: Blocker
>
> The change in YARN-5894 caused jackson-core-2.2.3.jar to be added in
> share/hadoop/yarn/lib/. This added dependency seems to be incompatible with
> jackson-core-asl-1.9.13.jar which is also shipped as a dependency. This new
> jackson-core jar ends up breaking jobs that ran fine on 2.8.0.
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