add Nothing back into the union

dmlc · Nov 5, 2023 · dc29c70 · dc29c70
1 parent 8c0e369
commit dc29c70
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/dmatrix.jl b/src/dmatrix.jl
@@ -581,7 +581,7 @@ function _unsafe_dataiter_reset(ptr::Ptr)
 end
 
 function _dmatrix_caching_config_json(;cache_prefix::AbstractString,
-                                      nthreads::Integer,
+                                       nthreads::Union{Integer, Nothing}
                                       missing_value::Float32=NaN32,
                                      )
     d = Dict("missing"=>"__NAN_STR__",