Please clarify documentation on how to use Coral-Spark with no hive
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- Dominant language
- Java
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Description
The objective of Coral-Spark => View logical plan to spark sql
Unfortunately the entrypoint to coral is RelNode which is hard to construct from a view logical plan.
I've looked into the test cases and it seems we can not live without hive.
HiveToRelConverter needs a full-fledged hive system. But to build a RelNode we only need spark's catalog (which can be anything, HMS/SparkCatalog or any 3rd party catalog).
But I've requirement of converting pure (LogicalPlan -> String) to re-generate sql.
Any ideas on that?
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Research direction
Start with the Coral-Spark entrypoint and the mentioned test cases, focusing on how HiveToRelConverter currently constructs a RelNode and what Spark catalog support is available. Document whether a pure Spark LogicalPlan can be converted to SQL without a full Hive system, including the supported setup and a clear example or limitation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, spark
- Domain
- databases, documentation
- Issue type
- Documentation
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100