Andrew Lamb created ARROW-9683:
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Summary: [Rust][DataFusion] Implement Debug for ExecutionPlan trait
Key: ARROW-9683
URL: https://issues.apache.org/jira/browse/ARROW-9683
Project: Apache Arrow
Issue Type: Improvement
Reporter: Andrew Lamb
Assignee: Andrew Lamb
For ARROW-9653, I was trying to debug the execution plan and I would have found
it easier if there had been a way to display the execution plan to better
understand and isolate the issue.
In general, for debugging purposes, we would like to be able to dump out an
execution plan. To do so in the idiomatic rust way, we should require that
`ExecutionPlan` also implement `std::fmt::Debug`
Here is an example plan for "SELECT c1, c2, MIN(c3) FROM aggregate_test_100
GROUP BY c1, c2"
{code}
physical plan is HashAggregateExec {
group_expr: [
Column {
name: "c1",
},
Column {
name: "c2",
},
],
aggr_expr: [
Min {
expr: Column {
name: "c3",
},
},
],
input: DataSourceExec {
schema: Schema {
fields: [
Field {
name: "c1",
data_type: Utf8,
nullable: false,
dict_id: 0,
dict_is_ordered: false,
},
Field {
name: "c2",
data_type: UInt32,
nullable: false,
dict_id: 0,
dict_is_ordered: false,
},
Field {
name: "c3",
data_type: Int8,
nullable: false,
dict_id: 0,
dict_is_ordered: false,
},
],
metadata: {},
},
partitions.len: 1,
},
schema: Schema {
fields: [
Field {
name: "c1",
data_type: Utf8,
nullable: true,
dict_id: 0,
dict_is_ordered: false,
},
Field {
name: "c2",
data_type: UInt32,
nullable: true,
dict_id: 0,
dict_is_ordered: false,
},
Field {
name: "MIN(c3)",
data_type: Int64,
nullable: true,
dict_id: 0,
dict_is_ordered: false,
},
],
metadata: {},
},
}
{code}
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