[jira] [Created] (FLINK-2941) Implement a neo4j - Flink/Gelly connector

["Vasia Kalavri (JIRA)" <ji...@apache.org>]

Vasia Kalavri created FLINK-2941:
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             Summary: Implement a neo4j - Flink/Gelly connector
                 Key: FLINK-2941
                 URL: https://issues.apache.org/jira/browse/FLINK-2941
             Project: Flink
          Issue Type: New Feature
          Components: Gelly
            Reporter: Vasia Kalavri


By connecting Flink/Gelly with a graph database like neo4j we can facilitate interesting use-cases, like:
- use neo4j as an input source, i.e. read the complete graph or a subgraph from a neo4j database, import it into Flink and run a graph analysis task with Gelly.
- use neo4j as a sink, i.e. perform ETL on some data in Flink to create a graph and insert the graph in a neo4j database for further querying.

We have started a discussion on possible implementations and have looked into similar projects, e.g. connecting neo4j to Spark. Some initial thoughts and experiences can be found in [this document|https://docs.google.com/document/d/13qT_e-y8aTNWQnD43jRBq1074Y1LggPNDsic_Obwc28/edit?usp=sharing]. Please, feel free to comment and add ideas! I will also start a discussion in the mailing with more concrete problems that we would like to get feedback on.



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