astefanutti commented on pull request #2126:
URL: https://github.com/apache/camel-k/pull/2126#issuecomment-861278600
The root cause of the issue with running the `debug` command in a separate
routine may lie in the usage of Viper _static_ methods, that relies on a static
instance:
```
fatal error: concurrent map iteration and map write
goroutine 2563 [running]:
runtime.throw(0x2517dd2, 0x26)
/opt/hostedtoolcache/go/1.15.13/x64/src/runtime/panic.go:1116 +0x72
fp=0xc0006f1398 sp=0xc0006f1368 pc=0x439972
runtime.mapiternext(0xc001068720)
/opt/hostedtoolcache/go/1.15.13/x64/src/runtime/map.go:853 +0x554
fp=0xc0006f1418 sp=0xc0006f1398 pc=0x412ab4
reflect.mapiternext(0xc001068720)
/opt/hostedtoolcache/go/1.15.13/x64/src/runtime/map.go:1337 +0x2b
fp=0xc0006f1430 sp=0xc0006f1418 pc=0x46bc0b
reflect.(*MapIter).Next(0xc0002143c0, 0x2213580)
/opt/hostedtoolcache/go/1.15.13/x64/src/reflect/value.go:1277 +0xd6
fp=0xc0006f1458 sp=0xc0006f1430 pc=0x4deb36
internal/fmtsort.Sort(0x216a200, 0xc0007d7410, 0x15, 0x28d13c0)
/opt/hostedtoolcache/go/1.15.13/x64/src/internal/fmtsort/sort.go:63
+0x1ac fp=0xc0006f1508 sp=0xc0006f1458 pc=0x4f1a4c
fmt.(*pp).printValue(0xc0009c60d0, 0x216a200, 0xc0007d7410, 0x15,
0x7fb900000076, 0x0)
/opt/hostedtoolcache/go/1.15.13/x64/src/fmt/print.go:773 +0xca5
fp=0xc0006f16e0 sp=0xc0006f1508 pc=0x4fb1c5
fmt.(*pp).printArg(0xc0009c60d0, 0x216a200, 0xc0007d7410, 0x76)
/opt/hostedtoolcache/go/1.15.13/x64/src/fmt/print.go:716 +0x2b4
fp=0xc0006f1778 sp=0xc0006f16e0 pc=0x4f9e74
fmt.(*pp).doPrintf(0xc0009c60d0, 0x254d701, 0x37, 0xc0006f1918, 0x2, 0x2)
/opt/hostedtoolcache/go/1.15.13/x64/src/fmt/print.go:1030 +0x168
fp=0xc0006f1860 sp=0xc0006f1778 pc=0x4fd468
fmt.Errorf(0x254d701, 0x37, 0xc0006f1918, 0x2, 0x2, 0x30, 0x30)
/opt/hostedtoolcache/go/1.15.13/x64/src/fmt/errors.go:20 +0x77
fp=0xc0006f18c8 sp=0xc0006f1860 pc=0x4f33b7
github.com/spf13/cast.ToStringMapE(0x216a200, 0xc0007d7410, 0x1e87015,
0x2f0000c00076b320, 0xc0007d7380)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/caste.go:989
+0x217 fp=0xc0006f19a8 sp=0xc0006f18c8 pc=0x1e29b77
github.com/spf13/cast.ToStringMap(...)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/cast.go:139
github.com/spf13/viper.(*Viper).isPathShadowedInFlatMap(0xc00076b320,
0xc0009c99b0, 0x3, 0x3, 0x216a200, 0xc0007d7410, 0x0, 0x3)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/viper.go:663
+0x73 fp=0xc0006f1a10 sp=0xc0006f19a8 pc=0x1e87173
github.com/spf13/viper.(*Viper).find(0xc00076b320, 0xc00021adb0, 0x24, 0x1,
0x41617b, 0xc0006f1bd0)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/viper.go:1092
+0xe6e fp=0xc0006f1b30 sp=0xc0006f1a10 pc=0x1e8a12e
github.com/spf13/viper.(*Viper).Get(0xc00076b320, 0xc00021adb0, 0x24, 0xf,
0xc000af9528)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/viper.go:728
+0x85 fp=0xc0006f1bc0 sp=0xc0006f1b30 pc=0x1e87465
github.com/spf13/viper.(*Viper).AllSettings(0xc00076b320, 0xc00168a248)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/viper.go:1923
+0xbc fp=0xc0006f1c80 sp=0xc0006f1bc0 pc=0x1e9191c
github.com/spf13/viper.AllSettings(...)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/viper.go:1918
github.com/apache/camel-k/pkg/cmd.decodeKey(0x22d5ec0, 0xc0009f40e0,
0xc0008a1355, 0xb, 0x1, 0x3)
/home/runner/work/camel-k/camel-k/pkg/cmd/util.go:120 +0xb8
fp=0xc0006f1d98 sp=0xc0006f1c80 pc=0x1f1a458
github.com/apache/camel-k/pkg/cmd.decode.func1(0xc00092e000, 0xc000af23f0,
0x1, 0x3, 0x0, 0x0)
/home/runner/work/camel-k/camel-k/pkg/cmd/util.go:164 +0x71
fp=0xc0006f1de8 sp=0xc0006f1d98 pc=0x1f2e011
github.com/spf13/cobra.(*Command).execute(0xc00092e000, 0xc000af2390, 0x3,
0x3, 0xc00092e000, 0xc000af2390)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:839
+0x530 fp=0xc0006f1ec0 sp=0xc0006f1de8 pc=0x1374450
github.com/spf13/cobra.(*Command).ExecuteC(0xc000ffe000, 0x0, 0xc000e3afc0,
0xc00026f080)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:958
+0x375 fp=0xc0006f1f98 sp=0xc0006f1ec0 pc=0x1374f15
github.com/spf13/cobra.(*Command).Execute(0xc000ffe000, 0xc000ffe000, 0x0)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:895
+0x2b fp=0xc0006f1fc8 sp=0xc0006f1f98 pc=0x1374b6b
runtime.goexit()
/opt/hostedtoolcache/go/1.15.13/x64/src/runtime/asm_amd64.s:1374 +0x1
fp=0xc0006f1fd0 sp=0xc0006f1fc8 pc=0x472421
created by github.com/apache/camel-k/e2e/common/cli.TestKamelCLIDebug.func1.3
/home/runner/work/camel-k/camel-k/e2e/common/cli/debug_test.go:71 +0x3a7
```
A possible solution would be to create a separate Viper instance, for each
command execution.
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