[ https://issues.apache.org/jira/browse/FLINK-4316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15409391#comment-15409391 ]
ASF GitHub Bot commented on FLINK-4316: --------------------------------------- GitHub user StephanEwen opened a pull request: https://github.com/apache/flink/pull/2338 [FLINK-4316] [core] [hadoop compatibility] Make flink-core independent of Hadoop This pull request moves all 'Writable' related code to the 'flink-hadoop-compatibility' project and uses reflection in 'flink-core' to instantiate WritableTypeInfo when needed. The test are also moved and adjusted to reflect this. One remaining issue is how to instantiate the WritableTypeInfo from within the Scala Macros. I'd need @aljoscha or @tillrohrmann to look at this. You can merge this pull request into a Git repository by running: $ git pull https://github.com/StephanEwen/incubator-flink core_no_hadoop Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/2338.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #2338 ---- commit dc509d6d4b5388a40cdd13f7102daf4a7c932dba Author: Stephan Ewen <se...@apache.org> Date: 2016-08-05T10:56:41Z [hadoop compatibility] Remove unneeded dependency to 'flink-clients' Also includes minor code cleanups for warnings and more explicit serialization behavior. commit 538759b047b337c3f2199ac400790f9a15ed4200 Author: Stephan Ewen <se...@apache.org> Date: 2016-08-05T12:27:48Z [FLINK-4316] [core] [hadoop compatibility] Make flink-core independent of Hadoop This commit moves all 'Writable' related code to the 'flink-hadoop-compatibility' project and uses reflection in 'flink-core' to instantiate WritableTypeInfo when needed. ---- > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)