Stephan Ewen created FLINK-4316:
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Summary: Make flink-core independent of Hadoop
Key: FLINK-4316
URL: https://issues.apache.org/jira/browse/FLINK-4316
Project: Flink
Issue Type: Bug
Components: Core
Affects Versions: 1.1.0
Reporter: Stephan Ewen
Assignee: Stephan Ewen
Fix For: 1.2.0
We want to gradually reduce the hard and heavy mandatory dependencies in
Hadoop. Hadoop will still be part of (most) flink downloads, but the API
projects should not have a hard dependency on Hadoop.
I suggest to start with {{flink-core}}, because it only depends on Hadoop for
the {{Writable}} type, to support seamless operation of Hadoop types.
I propose to move all {{WritableTypeInfo}}-related classes to the
{{flink-hadoop-compatibility}} project and access them via reflection in the
{{TypeExtractor}}.
That way, {{Writable}} types will be out of the box supported if users have the
{{flink-hadoop-compatibility}} project in the classpath.
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