thinkharderdev opened a new pull request #1677:
URL: https://github.com/apache/arrow-datafusion/pull/1677
# Which issue does this PR close?
Partially addresses #1675
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Closes #.
# Rationale for this change
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This is an initial draft at how we can make Ballista able to leverage the
extensibility of DataFusion. This PR in particular addresses a few items in
#1675 :
1. Abstracts the `SchedulerServer` over serializable representations of
DataFusion `LogicalPlan`s
2. Adds a typeclass `AsLogicalPlan` which can be implemented by a user to
shim a custom serialization into existing Ballista functionality.
3. Makes the serde for `LogicalPlan` "context aware" which should, in the
immediate term help sort out #1417
This is just an initial draft to demonstrate/validate the basic approach.
Ideally we would extend this to:
1. Allow injection of a user-defined `ExecutionContext` into the
`SchedulerServer` and `Executor` so we can register custom `ObjectStore`s and
other extensible bits of DataFusion.
2. Apply the same approach to the serializable representation of
`ExecutionPlan`s.
3. Create an explicit mechanism for embedding the scheduler/executor into a
separate service.
# What changes are included in this PR?
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# Are there any user-facing changes?
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This shouldn't break anything using the existing executables as we default
to the existing plan representation.
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