JuliaLang / JuliaLang/Distributed.jl
`remote_do` won't print exception to `stderr` when running a function on the master process
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error handling
- Dominant language
- Julia
- Stars
- 55
- Forks
- 19
- PR merge metrics
- No merged PRs in 30d
Description
julia> using Distributed
julia> addprocs(1)
1-element Array{Int64,1}:
2
julia> remote_do(sqrt, 1, -1)
julia> remote_do(sqrt, 2, -1)
julia> From worker 2: DomainError with -1.0:
From worker 2: sqrt will only return a complex result if called with a complex argument. Try sqrt(Complex(x)).
From worker 2: throw_complex_domainerror(::Symbol, ::Float64) at ./math.jl:33
From worker 2: sqrt at ./math.jl:573 [inlined]
From worker 2: sqrt(::Int64) at ./math.jl:599
From worker 2: (::Distributed.var"#114#116"{Distributed.RemoteDoMsg})() at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Distributed/src/process_messages.jl:315
From worker 2: run_work_thunk(::Distributed.var"#114#116"{Distributed.RemoteDoMsg}, ::Bool) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Distributed/src/process_messages.jl:79
julia> versioninfo()
Julia Version 1.5.3
Commit 788b2c77c1 (2020-11-09 13:37 UTC)
Platform Info:
OS: Linux (x86_64-pc-linux-gnu)
CPU: Intel(R) Xeon(R) Gold 6230 CPU @ 2.10GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-9.0.1 (ORCJIT, cascadelake)
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
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- Open a pull request that references the issue number.
Research direction
Reproduce the behavior with Julia 1.5.3 using Distributed, comparing remote_do(sqrt, 1, -1) on the master with the same call on worker 2. Start at the remote_do entry point and trace how exceptions are handled and reported. Done means the master-process failure is printed to stderr consistently with the worker-process failure.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- distributed-systems
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100