Calling workspace on remote workers doesn't work correctly

[jonathanBieler]

See the following example, the first issue is that isdefined is returning true, and then including again test.jl (which just contains the definition of test) doesn't load it.

julia> addprocs(1)
1-element Array{Int64,1}:
 2

julia> @everywhere include("test.jl")

julia> remotecall_fetch(test,2)
"hello"

julia> @everywhere workspace()

julia> remotecall_fetch(isdefined,2,:test)
true

julia> remotecall_fetch(test,2)
ERROR: UndefVarError: test not defined
 in eval(::Module, ::Any) at .\boot.jl:234
 in macro expansion at .\REPL.jl:92 [inlined]
 in (::Base.REPL.##1#2{Base.REPL.REPLBackend})() at .\event.jl:46

julia> include("test.jl")
test (generic function with 1 method)

julia> remotecall_wait(() -> begin include("test.jl") end,2)
WARNING: Method definition test() in module Main at D:\Julia\Julia-0.5.0-dev\test.jl:1 overwritten at D:\Julia\Julia-0.5.0-dev\test.jl:1.
Future(2,1,8,Nullable{Any}())

julia> remotecall_fetch(test,2)
ERROR: On worker 2:
UndefVarError: #test not defined
 in deserialize_datatype at .\serialize.jl:811
 in handle_deserialize at .\serialize.jl:558
 in deserialize_msg at .\multi.jl:120
 in message_handler_loop at .\multi.jl:1086
 in process_tcp_streams at .\multi.jl:1057
 in #496 at .\event.jl:46
 in #remotecall_fetch#488(::Array{Any,1}, ::Function, ::Function, ::Base.Worker) at .\multi.jl:901
 in remotecall_fetch(::Function, ::Base.Worker) at .\multi.jl:895
 in #remotecall_fetch#489(::Array{Any,1}, ::Function, ::Function, ::Int64) at .\multi.jl:904
 in remotecall_fetch(::Function, ::Int64) at .\multi.jl:904
 in eval(::Module, ::Any) at .\boot.jl:234
 in macro expansion at .\REPL.jl:92 [inlined]
 in (::Base.REPL.##1#2{Base.REPL.REPLBackend})() at .\event.jl:46

Here's whos just after calling workspace (no LastMain) :

julia> remotecall_fetch(whos,2)
        From worker 2:                            Base  30397 KB     Module
        From worker 2:                            Main  30398 KB     Module

Julia Version 0.5.0-dev+5364
Commit f47d9fe* (2016-07-12 17:36 UTC)
Platform Info:
  System: NT (x86_64-w64-mingw32)
  CPU: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Sandybridge)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.7.1 (ORCJIT, sandybridge)

[amitmurthy]

The first issue is probably a bug in isdefined

julia> remotecall_fetch(()->isdefined(LastMain, :test), 2)
true

julia> remotecall_fetch(()->isdefined(Main, :test), 2)
false

julia> remotecall_fetch(()->isdefined(:test), 2)
true

[vtjnash]

fixed by #22064