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https://issues.apache.org/jira/browse/FLINK-4315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15535380#comment-15535380
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Evgeny Kincharov commented on FLINK-4315:
-----------------------------------------
I have moved the org.apache.hadoop dependency from flink-java to
flink-hadoop-compatibility.
My changes are in
[https://github.com/apache/flink/compare/master...kenmy:FLINK-4315?expand=1]
I had to extract the hadoop dependency from flink-scala to avoid adding
flink-hadoop-compatibility as dependency into flink-scala. Since the
flink-scala used some classes from flink-java, which were transferred into
flink-hadoop-compatibility.
What has changed:
* The FlinkHadoopEnvironment class has been created In
flink-hadoop-compatibility, the following methods from the class
ExecutionEnvironment have been moved there:
** readHadoopFile
** readSequenceFile
** createHadoopInput
* The ExecutionEnvironment object is passed to the constructor of
FlinkHadoopEnvironment.
* The classes that depend on hadoop were moved into the
flink-hadoop-compatibility.
* The JAPICmp was disabled for flink-scala and flink-java due the API changes.
Perhaps there is a better solution.
Similar changes have been made for flink-scala.
In flink-scala remained one reference to hadoop: Writeble in the trait
org.apache.flink.api.scala.codegen.TypeInformationGen.
Please review, and if everything is OK I'll create PR.
> Remove Hadoop Dependency from flink-java
> ----------------------------------------
>
> Key: FLINK-4315
> URL: https://issues.apache.org/jira/browse/FLINK-4315
> Project: Flink
> Issue Type: Sub-task
> Components: Java API
> Reporter: Stephan Ewen
> Assignee: Evgeny Kincharov
> Fix For: 2.0.0
>
>
> The API projects should be independent of Hadoop, because Hadoop is not an
> integral part of the Flink stack, and we should have the option to offer
> Flink without Hadoop dependencies.
> The current batch APIs have a hard dependency on Hadoop, mainly because the
> API has utility methods like `readHadoopFile(...)`.
> I suggest to remove those methods and instead add helpers in the
> `flink-hadoop-compatibility` project.
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