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https://issues.apache.org/jira/browse/FLINK-2941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15175434#comment-15175434
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Vasia Kalavri commented on FLINK-2941:
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Hey [~mju],
thanks for working on this! I'm very happy we have working input and output
formats for Neo4j :D
Regarding the licenses, afaik we cannot have a GPL dependency in Flink. So, I
see two solutions here:
(1) we add the Neo4j connector to flink-batch-connectors without tests.
Examples don't depend on anything GPL licensed, right?
(2) we keep this as an external flink package.
I'm personally in favor of (1), but I would like to hear other people's
opinions. It seems that there are other batch connectors without tests btw,
e.g. hcatalog and hbase.
> 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
> Assignee: Martin Junghanns
> Labels: requires-design-doc
>
> 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 list with more concrete problems that we would like to get
> feedback on.
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