Struct Decision 

#[non_exhaustive]
pub struct Decision {
    pub node: String,
    pub taken: bool,
    pub reason: String,
    pub runtime_fallback: bool,
    pub groups: Option<GroupChoice>,
}

One node the rule looked at, one replaced aggregate’s run-time choice, or one runtime fallback.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

node: String

The node, as DataFusion prints it on one line.

taken: bool

At plan time: the node was replaced by a MetalExec. For a run-time choice: the aggregate ran on ArrowMetal.

reason: String

Why it was taken or left.

runtime_fallback: bool

True for a MetalExec that hit an ArrowMetal error at run time and ran DataFusion instead.

groups: Option<GroupChoice>

For a replaced aggregate’s run-time choice: what it was decided from. taken is then whether it ran on ArrowMetal.

Implementations

impl Decision

pub fn is_runtime_choice(&self) -> bool

A replaced aggregate’s run-time choice (see AggregateChoice).

pub fn is_data_dependent(&self) -> bool

A runtime fallback (the runtime_fallback field) caused by the data, not an error.

Trait Implementations

impl Clone for Decision

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Decision

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Decision

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Decision

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Decision