Server returned status: 500

[blegat]

@ulfworsoe I keep randomly getting

Mosek.MosekError(8002, "Server returned status: 500 .\n")

on ci. Any idea what's wrong ?
This error happens on different test cases depending on the run and on different Julia version so it's clearly seems unrelated what is in MosekTools.

[odow]

All ticks green in #156, so I assume that this is just a rate issue with the server. We have three parallel CI jobs all hitting the same server with lots of very small jobs...

[odow]

Closed by #163

I've added

MosekTools.jl/test/runtests.jl

Lines 13 to 41 in cf139eb

	const _MOSEK_API_COUNTER = Ref{Int}(0)
	if isdefined(MOI.Test, :_error_handler)
	@eval function MOI.Test._error_handler(
	err::Mosek.MosekError,
	name::String,
	warn_unsupported::Bool,
	)
	if err.rcode == Mosek.MSK_RES_ERR_SERVER_STATUS.value
	_MOSEK_API_COUNTER[] += 1
	return # Server returned non-ok HTTP status code
	end
	return rethrow(err)
	end
	end
	function runtests()
	_MOSEK_API_COUNTER[] = 0
	for name in names(@__MODULE__; all = true)
	if startswith("$name", "test_")
	@testset "$name" begin
	getfield(@__MODULE__, name)()
	end
	end
	end
	# Test that there are less than 5 API call failures during a test run
	@test _MOSEK_API_COUNTER[] < 5
	return
	end

which will skip if we hit the error, but test that it's only a few times so we still fail if it breaks for every solve.

We can reinvestigate if this becomes a problem.

[blegat]

Maybe we could also have retried the server if it failed

[odow]

Yeah but then that'd need a try-catch inside optimize, and I wasn't sure if the internal state is okay just restarting.