2010YOUY01 commented on code in PR #15520:
URL: https://github.com/apache/datafusion/pull/15520#discussion_r2026154931
##########
datafusion/core/tests/memory_limit/mod.rs:
##########
@@ -524,6 +526,93 @@ async fn test_external_sort_zero_merge_reservation() {
assert!(spill_count > 0);
}
+// Tests for disk limit (`max_temp_directory_size` in `DiskManager`)
+// ------------------------------------------------------------------
+
+// Create a new `SessionContext` with speicified disk limit and memory pool
limit
+async fn setup_context(
+ disk_limit: u64,
+ memory_pool_limit: usize,
+) -> Result<SessionContext> {
+ let disk_manager = DiskManager::try_new(DiskManagerConfig::NewOs)?;
+
+ let disk_manager = Arc::try_unwrap(disk_manager)
+ .expect("DiskManager should be a single instance")
+ .with_max_temp_directory_size(disk_limit)?;
+
+ let runtime = RuntimeEnvBuilder::new()
+ .with_memory_pool(Arc::new(FairSpillPool::new(memory_pool_limit)))
+ .build_arc()
+ .unwrap();
+
+ let runtime = Arc::new(RuntimeEnv {
+ memory_pool: runtime.memory_pool.clone(),
+ disk_manager: Arc::new(disk_manager),
+ cache_manager: runtime.cache_manager.clone(),
+ object_store_registry: runtime.object_store_registry.clone(),
+ });
+
+ let config = SessionConfig::new()
+ .with_sort_spill_reservation_bytes(10 * 1024 * 1024) // 10MB
+ .with_target_partitions(1);
+
+ Ok(SessionContext::new_with_config_rt(config, runtime))
+}
+
+/// If the spilled bytes exceed the disk limit, the query should fail
+/// (specified by `max_temp_directory_size` in `DiskManager`)
+#[tokio::test]
+async fn test_disk_spill_limit_reached() -> Result<()> {
+ let ctx = setup_context(10 * 1024 * 1024, 60 * 1024 * 1024).await?;
+
+ let df = ctx
+ .sql("select * from generate_series(1, 1000000000000) as t1(v1) order
by v1")
+ .await
+ .unwrap();
+
+ let err = df.collect().await.unwrap_err();
+ assert_contains!(
+ err.to_string(),
+ "The used disk space during the spilling process has exceeded the
allowable limit"
+ );
+
+ Ok(())
+}
+
+/// External query should succeed, if the spilled bytes is less than the disk
limit
+/// Also verify that after the query is finished, all the disk usage accounted
by
+/// tempfiles are cleaned up.
+#[tokio::test]
+async fn test_disk_spill_limit_not_reached() -> Result<()> {
+ let disk_spill_limit = 100 * 1024 * 1024; // 100MB
Review Comment:
[5506637](https://github.com/apache/datafusion/pull/15520/commits/550663795933ae538a3f6864465f473765991df8)
reduced the disk and memory usage of UT to < 1MB
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