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https://issues.apache.org/jira/browse/FLINK-12163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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morvenhuang updated FLINK-12163:
--------------------------------
Summary: Hadoop Compatibility, could not load the TypeInformation due to
incorrect classloader (was: Hadoop Compatibility, Could not load the
TypeInformation due to incorrect classloader)
> Hadoop Compatibility, could not load the TypeInformation due to incorrect
> classloader
> -------------------------------------------------------------------------------------
>
> Key: FLINK-12163
> URL: https://issues.apache.org/jira/browse/FLINK-12163
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Hadoop Compatibility
> Affects Versions: 1.7.2
> Environment: Flink 1.5.6 standalone, Flink 1.7.2 standalone,
> Hadoop 2.9.1 standalone
> Reporter: morvenhuang
> Priority: Critical
>
> For Flink 1.5.6, 1.7.2, I keep getting error when using Hadoop Compatibility,
> {code:java}
> Caused by: java.lang.RuntimeException: Could not load the TypeInformation for
> the class 'org.apache.hadoop.io.Writable'. You may be missing the
> 'flink-hadoop-compatibility' dependency.
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.createHadoopWritableTypeInfo(TypeExtractor.java:2140)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1759)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1701)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfoWithTypeHierarchy(TypeExtractor.java:956)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.createSubTypesInfo(TypeExtractor.java:1176)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfoWithTypeHierarchy(TypeExtractor.java:889)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.privateCreateTypeInfo(TypeExtractor.java:839)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfo(TypeExtractor.java:805)
> at
> org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfo(TypeExtractor.java:798)
> at org.apache.flink.api.common.typeinfo.TypeHint.<init>(TypeHint.java:50)
> {code}
> Packaging the flink-hadoop-compatibility dependency with my code into a fat
> jar doesn't help.
> The error won't go until I copy the flink-hadoop-compatibility jar to
> FLINK_HOME/lib.
> This seems to be a classloader issue when looking into the
> TypeExtractor#createHadoopWritableTypeInfo
> {code:java}
> Class<?> typeInfoClass;
> try {
> typeInfoClass = Class.forName(HADOOP_WRITABLE_TYPEINFO_CLASS, false,
> TypeExtractor.class.getClassLoader());
> }
> catch (ClassNotFoundException e) {
> throw new RuntimeException("Could not load the TypeInformation for the class
> '"
> + HADOOP_WRITABLE_CLASS + "'. You may be missing the
> 'flink-hadoop-compatibility' dependency.");
> }
> {code}
>
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