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Merged
merged 2 commits into from
Oct 18, 2022
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Add setting for statistics collection #3846

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Add setting for statistics collection
Dandandan Oct 15, 2022
152e408
fmt
Dandandan Oct 15, 2022
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21 changes: 20 additions & 1 deletion datafusion/core/src/execution/context.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -491,7 +491,7 @@ impl SessionContext {
};
let options = ListingOptions {
format: file_format,
collect_stat: false,
collect_stat: self.copied_config().collect_statistics,
file_extension: file_extension.to_owned(),
target_partitions: self.copied_config().target_partitions,
table_partition_cols: cmd.table_partition_cols.clone(),
Expand Down Expand Up @@ -1092,6 +1092,8 @@ pub const REPARTITION_AGGREGATIONS: &str = "repartition_aggregations";
pub const REPARTITION_WINDOWS: &str = "repartition_windows";
/// Session Configuration entry name for 'PARQUET_PRUNING'
pub const PARQUET_PRUNING: &str = "parquet_pruning";
/// Session Configuration entry name for 'COLLECT_STATISTICS'
pub const COLLECT_STATISTICS: &str = "collect_statistics";

/// Map that holds opaque objects indexed by their type.
///
Expand Down Expand Up @@ -1149,6 +1151,8 @@ pub struct SessionConfig {
pub repartition_windows: bool,
/// Should DataFusion parquet reader using the predicate to prune data
pub parquet_pruning: bool,
/// Should DataFusion collect statistics after listing files
pub collect_statistics: bool,
/// Configuration options
pub config_options: Arc<RwLock<ConfigOptions>>,
/// Opaque extensions.
Expand All @@ -1167,6 +1171,7 @@ impl Default for SessionConfig {
repartition_aggregations: true,
repartition_windows: true,
parquet_pruning: true,
collect_statistics: false,
config_options: Arc::new(RwLock::new(ConfigOptions::new())),
// Assume no extensions by default.
extensions: HashMap::with_capacity_and_hasher(
Expand Down Expand Up @@ -1269,6 +1274,12 @@ impl SessionConfig {
self
}

/// Enables or disables the collection of statistics after listing files
pub fn with_collect_statistics(mut self, enabled: bool) -> Self {
self.collect_statistics = enabled;
self
}

/// Get the currently configured batch size
pub fn batch_size(&self) -> usize {
self.config_options
Expand Down Expand Up @@ -1312,6 +1323,11 @@ impl SessionConfig {
PARQUET_PRUNING.to_owned(),
format!("{}", self.parquet_pruning),
);
map.insert(
COLLECT_STATISTICS.to_owned(),
format!("{}", self.collect_statistics),
);

map
}

Expand Down Expand Up @@ -1771,6 +1787,9 @@ impl TaskContext {
.with_parquet_pruning(
props.get(PARQUET_PRUNING).unwrap().parse().unwrap(),
)
.with_collect_statistics(
props.get(COLLECT_STATISTICS).unwrap().parse().unwrap(),
)
}
}
TaskProperties::SessionConfig(session_config) => session_config.clone(),
Expand Down