s1ck opened a new pull request #24490: [SPARK-27300][GRAPH] Add Spark Graph modules and dependencies URL: https://github.com/apache/spark/pull/24490 Co-authored-by: Sören Reichardt <[email protected]> ## What changes were proposed in this pull request? This PR introduces the necessary Maven modules for the new [Spark Graph](https://issues.apache.org/jira/browse/SPARK-25994) feature for Spark 3.0. * `spark-graph` is a parent module that users depend on to get all graph functionalities (Cypher and Graph Algorithms) * `spark-graph-api` defines the [Property Graph API](https://docs.google.com/document/d/1Wxzghj0PvpOVu7XD1iA8uonRYhexwn18utdcTxtkxlI) that is being shared between Cypher and Algorithms * `spark-cypher` contains a Cypher query engine implementation Both, `spark-graph-api` and `spark-cypher` depend on Spark SQL. Note, that the Maven module for Graph Algorithms is not part of this PR and will be introduced in https://issues.apache.org/jira/browse/SPARK-27302 A PoC for a running Cypher implementation can be found in this WIP PR https://github.com/apache/spark/pull/24297 ## How was this patch tested? There is a `DummySuite` in `spark-cypher` to enforce building the modules.
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