Unreachable reached during combine

[tk3369]

How to reproduce:

using CSV
using DataFrames
using Pipe
using Dates

url = "http://files.zillowstatic.com/research/public_v2/zhvi/Metro_zhvi_uc_sfrcondo_tier_0.33_0.67_sm_sa_mon.csv"
housing = DataFrame(CSV.File(download(url)))

housing_stacked = @pipe housing |>
    stack(_, Not([:RegionID, :SizeRank, :RegionName, :RegionType, :StateName])) |>
    rename(_, :variable => :date) |>
    transform(_, :date => (v -> Date.(get.(v))) => :date)

housing_by_year = @pipe housing_stacked |>
    transform(_, :date => ByRow(d -> Year(d).value) => :year) |>
    select(_, Not(:date)) |>
    groupby(_, Not(:value)) |>
    combine(_, :value => sum)

Stack trace:

Unreachable reached at 0x7f5ad01b6950

signal (4): Illegal instruction
in expression starting at REPL[8]:1
groupreduce at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:1023
unknown function (ip: 0x7f5ad01b6986)
Reduce at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:1032
unknown function (ip: 0x7f5ad01b6846)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2159 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2323
_combine at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:1150
#combine_helper#391 at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:589
combine_helper##kw at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:585
unknown function (ip: 0x7f5ad01adfd1)
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2159 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2323
#_combine_prepare#379 at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:553
unknown function (ip: 0x7f5ad01abfef)
_combine_prepare##kw at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:482 [inlined]
#combine#378 at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:474 [inlined]
combine at /home/admin/.julia/packages/DataFrames/lfoTw/src/groupeddataframe/splitapplycombine.jl:474
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2159 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2323
jl_apply at /buildworker/worker/package_linux64/build/src/julia.h:1700 [inlined]
do_call at /buildworker/worker/package_linux64/build/src/interpreter.c:369
eval_value at /buildworker/worker/package_linux64/build/src/interpreter.c:458
eval_stmt_value at /buildworker/worker/package_linux64/build/src/interpreter.c:409 [inlined]
eval_body at /buildworker/worker/package_linux64/build/src/interpreter.c:817
jl_interpret_toplevel_thunk at /buildworker/worker/package_linux64/build/src/interpreter.c:911
jl_toplevel_eval_flex at /buildworker/worker/package_linux64/build/src/toplevel.c:819
jl_toplevel_eval_flex at /buildworker/worker/package_linux64/build/src/toplevel.c:769
jl_toplevel_eval_in at /buildworker/worker/package_linux64/build/src/toplevel.c:848
eval at ./boot.jl:331
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2145 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2323
eval_user_input at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.4/REPL/src/REPL.jl:86
macro expansion at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.4/REPL/src/REPL.jl:118 [inlined]
#26 at ./task.jl:358
_jl_invoke at /buildworker/worker/package_linux64/build/src/gf.c:2145 [inlined]
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2323
jl_apply at /buildworker/worker/package_linux64/build/src/julia.h:1700 [inlined]
start_task at /buildworker/worker/package_linux64/build/src/task.c:687
unknown function (ip: (nil))
Allocations: 50030371 (Pool: 50020201; Big: 10170); GC: 56
Illegal instruction

I tried both Julia 1.4.2 and 1.5.0 and they both failed.

[quinnj]

This looks like the same issue that was solved in #2335; what version of DataFrames are you on? I think the fix has been released now in the latest tag.

[tk3369]

Yes, that's it. I was using v0.21.5. Just updated to v0.21.6 and it's working fine now. Thanks!