chore: fix features (#14977)

crates/polars-ops/src/chunked_array/list/sets.rs

@@ -421,6 +421,7 @@ pub fn list_set_operation(
     b.prune_empty_chunks();
 
     // Make categoricals compatible
+    #[cfg(feature = "dtype-categorical")]
     if let (DataType::Categorical(_, _), DataType::Categorical(_, _)) =
         (&a.inner_dtype(), &b.inner_dtype())
     {

crates/polars-pipe/src/executors/sinks/memory.rs

@@ -41,7 +41,7 @@ impl MemTracker {
     }
 
     /// This shouldn't be called often as this is expensive.
-    fn refresh_memory(&self) {
+    pub fn refresh_memory(&self) {
         self.available_mem
             .store(MEMINFO.free() as usize, Ordering::Relaxed);
     }
@@ -57,6 +57,12 @@ impl MemTracker {
         self.available_mem.load(Ordering::Relaxed)
     }
 
+    pub(super) fn get_available_latest(&self) -> usize {
+        self.refresh_memory();
+        self.fetch_count.store(0, Ordering::Relaxed);
+        self.available_mem.load(Ordering::Relaxed)
+    }
+
     pub(super) fn free_memory_fraction_since_start(&self) -> f64 {
         // We divide first to reduce the precision loss in floats.
         // We also add 1.0 to available_at_start to prevent division by zero.

crates/polars-pipe/src/executors/sinks/sort/ooc.rs

@@ -117,7 +117,10 @@ pub(super) fn sort_ooc(
 ) -> PolarsResult<FinalizedSink> {
     let samples = samples.to_physical_repr().into_owned();
     // Try to use available memory. At least 32MB per spill.
-    let spill_size = std::cmp::max(memtrack.get_available() / (samples.len() * 2), 1 << 25) as u64;
+    let spill_size = std::cmp::max(
+        memtrack.get_available_latest() / (samples.len() * 3),
+        1 << 25,
+    ) as u64;
 
     // we collect as I am not sure that if we write to the same directory the
     // iterator will read those also.