ericphanson commented on code in PR #325:
URL: https://github.com/apache/arrow-julia/pull/325#discussion_r894624797
##########
src/write.jl:
##########
@@ -135,16 +135,13 @@ mutable struct Writer{T<:IO}
end
function Base.open(::Type{Writer}, io::T,
compress::Union{Nothing,LZ4FrameCompressor,<:AbstractVector{LZ4FrameCompressor},ZstdCompressor,<:AbstractVector{ZstdCompressor}},
writetofile::Bool, largelists::Bool, denseunions::Bool, dictencode::Bool,
dictencodenested::Bool, alignment::Integer, maxdepth::Integer, ntasks::Integer,
meta::Union{Nothing,Any}, colmeta::Union{Nothing,Any}, closeio::Bool) where
{T<:IO}
- if ntasks < 1
- throw(ArgumentError("ntasks keyword argument must be > 0; pass
`ntasks=1` to disable multithreaded writing"))
- end
msgs = OrderedChannel{Message}(ntasks)
schema = Ref{Tables.Schema}()
firstcols = Ref{Any}()
dictencodings = Dict{Int64,Any}() # Lockable{DictEncoding}
blocks = (Block[], Block[])
# start message writing from channel
- threaded = ntasks > 1
+ threaded = Threads.nthreads() > 1
Review Comment:
ah ok, thank you for clarifying, that seems reasonable & non-breaking to me
too.
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