MethodError since 0.2.1

[MaximilianJHuber]

I try to load a table that I saved with a previous version of JuliaDB. It contains a column that is of type Int8. I get:

MethodError: no method matching PooledArrays.PooledArray(::PooledArrays.RefArray{Array{UInt8,1}}, ::Array{Int8,1})
[1] deserialize(::SerializationState{IOStream}, ::Type{MemPool.MMSer{PooledArrays.PooledArray}}) at C:\Users\Max\AppData\Local\JuliaPro-0.6.2.1\pkgs-0.6.2.1\v0.6\MemPool\src\io.jl:10
[2] handle_deserialize(::SerializationState{IOStream}, ::Int32) at .\serialize.jl:685
[3] collect_to!(::Array{Array{T,1} where T,1}, ::Base.Generator{UnitRange{Int64},JuliaDB.##30#32{SerializationState{IOStream}}}, ::Int64, ::Int64) at .\array.jl:508
[4] collect_to!(::Array{Array{Int32,1},1}, ::Base.Generator{UnitRange{Int64},JuliaDB.##30#32{SerializationState{IOStream}}}, ::Int64, ::Int64) at .\array.jl:518
[5] collect(::Base.Generator{UnitRange{Int64},JuliaDB.##30#32{SerializationState{IOStream}}}) at .\array.jl:476
[6] mmread(::Type{IndexedTables.Columns}, ::SerializationState{IOStream}, ::Bool) at C:\Users\Max\AppData\Local\JuliaPro-0.6.2.1\pkgs-0.6.2.1\v0.6\JuliaDB\src\serialize.jl:57
[7] deserialize(::SerializationState{IOStream}, ::Type{MemPool.MMSer{IndexedTables.Columns}}) at C:\Users\Max\AppData\Local\JuliaPro-0.6.2.1\pkgs-0.6.2.1\v0.6\MemPool\src\io.jl:10
[8] handle_deserialize(::SerializationState{IOStream}, ::Int32) at .\serialize.jl:685
[9] mmread(::Type{IndexedTables.NextTable}, ::SerializationState{IOStream}, ::Bool) at C:\Users\Max\AppData\Local\JuliaPro-0.6.2.1\pkgs-0.6.2.1\v0.6\JuliaDB\src\serialize.jl:86
[10] deserialize(::SerializationState{IOStream}, ::Type{MemPool.MMSer{IndexedTables.NextTable}}) at C:\Users\Max\AppData\Local\JuliaPro-0.6.2.1\pkgs-0.6.2.1\v0.6\MemPool\src\io.jl:10
[11] handle_deserialize(::SerializationState{IOStream}, ::Int32) at .\serialize.jl:685
[12] open(::Base.Serializer.#deserialize, ::String) at .\iostream.jl:152
[13] load(::String) at C:\Users\Max\AppData\Local\JuliaPro-0.6.2.1\pkgs-0.6.2.1\v0.6\JuliaDB\src\io.jl:185

I am using Julia 0.6.2 and:

- MemPool                       0.0.11
- PooledArrays                  0.2.1
- JuliaDB                       0.8.4

Downgrading JuliaDB to 0.8.1 (and hence PooledArrays to 0.1.1) resolves the issue, using version 0.8.2 the issue is back.

[bkamins]

@MaximilianJHuber - does this problem persist (and is it PooledArrays.jl related)?

[MaximilianJHuber]

Not quite sure, because with the current JuliaDB I am running into this issue.

Let me close the issue for now.