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https://issues.apache.org/jira/browse/FLINK-6157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15944909#comment-15944909
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ASF GitHub Bot commented on FLINK-6157:
---------------------------------------
Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3619
Related test failure on travis:
```
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile
(default-testCompile) on project flink-core: Compilation failure: Compilation
failure:
[ERROR]
/home/travis/build/apache/flink/flink-core/src/test/java/org/apache/flink/api/java/typeutils/EnumTypeInfoTest.java:[31,41]
incompatible types: cannot infer type arguments for
org.apache.flink.api.java.typeutils.EnumTypeInfo<>
[ERROR] reason: inference variable T has incompatible bounds
[ERROR] equality constraints:
org.apache.flink.api.java.typeutils.EnumTypeInfoTest.TestEnum
[ERROR] upper bounds: java.lang.Enum<capture#1 of ?>,java.lang.Enum<T>
[ERROR]
/home/travis/build/apache/flink/flink-core/src/test/java/org/apache/flink/api/java/typeutils/EnumTypeInfoTest.java:[32,41]
incompatible types: cannot infer type arguments for
org.apache.flink.api.java.typeutils.EnumTypeInfo<>
[ERROR] reason: inference variable T has incompatible bounds
[ERROR] equality constraints:
org.apache.flink.api.java.typeutils.EnumTypeInfoTest.AlternativeEnum
[ERROR] upper bounds: java.lang.Enum<capture#1 of ?>,java.lang.Enum<T>
[ERROR] -> [Help 1]
```
> Make TypeInformation fully serializable
> ---------------------------------------
>
> Key: FLINK-6157
> URL: https://issues.apache.org/jira/browse/FLINK-6157
> Project: Flink
> Issue Type: Improvement
> Components: Core
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> TypeInformation is already declared serializable, however, there are no tests
> that verify that all classes are really serializable.
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