[FLINK-3303] Move all non-batch specific classes in flink-java to flink-core

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Done
• Affects Version/s: 0.10.0
• Fix Version/s: 1.0.0
• Assignee: Stephan Ewen
• Reporter: Stephan Ewen
• Created: 29/Jan/16 15:12
• Updated: 28/Feb/19 14:29
• Resolved: 02/Feb/16 17:24

Description

Currently, flink-java has a lot of classes that are also needed by the streaming api and that are useful to the classes in flink-core.
In particular, certain improvements to the state API are blocked by the fact that certain classes are not in flink-core.

I suggest to move classes from flink-java to flink-core after the following pattern:

• flink-core will contain all classes that are common across the batch and streaming API.
• flink-java will contain all batch API specific classes (we may eventually even think about renaming it to flink-batch-java.

Because flink-java references flink-core, this will not be a breaking change.