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https://issues.apache.org/jira/browse/FLINK-8177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16272679#comment-16272679
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Aljoscha Krettek commented on FLINK-8177:
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I simply changed the test to not extend {{Container}} but to instead mock it.
This way we get around the differing interfaces for different Hadoop versions.
We probably should not offer a hadoop 2.9.0 release for 1.4.0 because that
would require further testing but if this travis run succeeds I'm somewhat
confident that users can just use the "Hadoop-free" binary release and drop in
whatever hadoop version they like or use it on YARN.
> Flink cannot be built for Hadoop 2.9.0
> --------------------------------------
>
> Key: FLINK-8177
> URL: https://issues.apache.org/jira/browse/FLINK-8177
> Project: Flink
> Issue Type: Bug
> Components: YARN
> Affects Versions: 1.4.0, 1.5.0
> Reporter: Fabian Hueske
> Priority: Critical
>
> Flink cannot be built for Hadoop 2.9.0 which was released on Nov. 17th, 2017.
> When running
> {code}
> mvn clean install -DskipTests -Dhadoop.version=2.9.0
> {code}
> Maven fails with the following error:
> {code}
> [ERROR]
> /Users/fhueske/Development/flink/flink-yarn/src/test/java/org/apache/flink/yarn/UtilsTest.java:[239,16]
> org.apache.flink.yarn.UtilsTest.TestingContainer is not abstract and does
> not override abstract method
> setExecutionType(org.apache.hadoop.yarn.api.records.ExecutionType) in
> org.apache.hadoop.yarn.api.records.Container
> {code}
> The problem is caused, because Hadoop 2.9.0 extended the {{Container}}
> interface with a getter ({{getExecutionType()}}) and a setter method
> ({{setExecutionType()}}) and adds a class dependency on {{ExecutionType}}.
> Flink's {{UtilsTest}} class defines a class {{TestingContainer}} that
> implements the {{Container}} interface.
> We cannot simply update the implementation of {{TestingContainer}} because
> previous versions of Hadoop do not provide {{ExecutionType}}.
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