jorgecarleitao commented on a change in pull request #8428:
URL: https://github.com/apache/arrow/pull/8428#discussion_r502822633
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File path: rust/datafusion/src/datasource/memory.rs
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@@ -59,13 +61,22 @@ impl MemTable {
pub async fn load(t: &dyn TableProvider, batch_size: usize) ->
Result<Self> {
let schema = t.schema();
let exec = t.scan(&None, batch_size)?;
+ let partition_count = exec.output_partitioning().partition_count();
+
+ let mut tasks = Vec::with_capacity(partition_count);
+ for partition in 0..partition_count {
+ let exec = exec.clone();
+ let task: JoinHandle<Result<Vec<RecordBatch>>> = task::spawn(async
move {
+ let it = exec.execute(partition).await?;
+ Ok(it.into_iter().collect::<ArrowResult<Vec<RecordBatch>>>()?)
Review comment:
(I have not tested this)
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