如何在 julia 中连接具有相同结构的 Apache Arrow 文件

如何解决如何在 julia 中连接具有相同结构的 Apache Arrow 文件

如何在不将每个文件读入内存的情况下，将多个结构相同的 Arrow 文件连接成一个 Arrow 文件？我正在使用 Arrow.jl 和 Arrow 文件表示具有相同结构的数据帧，并且组合的数据帧大于可用内存。我一直在做以下事情：

function openhhmembershipchunk(basedirectory::String,node::String,chunk::Int64)
    open(joinpath(basedirectory,node,"DayExtraction","HouseholdMembershipDays$(chunk).arrow")) do io
        return Arrow.Table(io) |> DataFrame
    end;
end
"Concatenate household membership day batches"
function combinehhmembershipdaybatch(basedirectory::String,batches)
    d = openhhmembershipchunk(basedirectory::String,1)
    days = copy(d)
    for i = 2:batches
        m = openhhmembershipchunk(basedirectory::String,i)
        append!(days,m)
    end
    Arrow.write(joinpath(basedirectory,"HouseholdMembershipDays.arrow"),days,compress=:zstd)
    #delete chunks
    for i = 1:batches
        rm(joinpath(basedirectory,"HouseholdMembershipDays$(i).arrow"))
    end
    return nothing
end #combinehhresidencydaybatch