simpler

Signed-off-by: Robert Kruszewski <github@robertk.io>

Author: robert3005

vortex-btrblocks/src/compressor/bool/mod.rs

@@ -140,7 +140,7 @@ impl Scheme for ConstantScheme {
         }
 
         // Only compress non-nullable or all-valid nullable arrays.
-        if stats.src.dtype().is_nullable() && !stats.src.all_valid()? {
+        if stats.src.dtype().is_nullable() && stats.null_count > 0 {
             return Ok(0.0);
         }
 

vortex-btrblocks/src/compressor/bool/stats.rs

@@ -19,7 +19,6 @@ use crate::sample::sample;
 pub struct BoolStats {
     pub(crate) src: BoolArray,
     /// Number of null values.
-    #[allow(dead_code)]
     pub(crate) null_count: u32,
     /// Number of non-null values.
     pub(crate) value_count: u32,