Hi,
My program which has 10 user gourotines to read tables from a database and
generates some stats. I am using github.com/alexbrainman/odbc to connect
SQL Server 2012.
I am getting driver: bad connection frequently, but not always. Can
somebody help me in debugging this?
Sart of the stack trace....
panic: driver: bad connection
goroutine 18 [running]:
panic(0x4fa740, 0xc04200c2b0)
C:/Go/src/runtime/panic.go:500 +0x1af fp=0xc0421d70f0 sp=0xc0421d7060
main.process(0xc0420e4000, 0xc042165070)
C:/Users/tgmsaven1/go/src/github.com/TGMNY/compstats/compstats.go:498
+0x274a fp=0xc0421d7f80 sp=0xc0421d70f0
runtime.goexit()
C:/Go/src/runtime/asm_amd64.s:2086 +0x1 fp=0xc0421d7f88 sp=0xc0421d7f80
created by main.main
C:/Users/tgmsaven1/go/src/github.com/TGMNY/compstats/compstats.go:268
+0xfc4
goroutine 1 [semacquire, 8 minutes]:
runtime.gopark(0x534e98, 0x5b4140, 0x51b357, 0xa, 0x19, 0x4)
C:/Go/src/runtime/proc.go:259 +0x14f fp=0xc0424dd680 sp=0xc0424dd650
runtime.goparkunlock(0x5b4140, 0x51b357, 0xa, 0xc042072219, 0x4)
C:/Go/src/runtime/proc.go:265 +0x65 fp=0xc0424dd6c0 sp=0xc0424dd680
runtime.semacquire(0xc04216507c, 0x1)
C:/Go/src/runtime/sema.go:111 +0x222 fp=0xc0424dd728 sp=0xc0424dd6c0
sync.runtime_Semacquire(0xc04216507c)
C:/Go/src/runtime/sema.go:47 +0x37 fp=0xc0424dd748 sp=0xc0424dd728
sync.(*WaitGroup).Wait(0xc042165070)
C:/Go/src/sync/waitgroup.go:131 +0x9e fp=0xc0424dd798 sp=0xc0424dd748
main.main()
C:/Users/tgmsaven1/go/src/github.com/TGMNY/compstats/compstats.go:310
+0x16c4 fp=0xc0424ddf48 sp=0xc0424dd798
runtime.main()
C:/Go/src/runtime/proc.go:183 +0x1f0 fp=0xc0424ddfa0 sp=0xc0424ddf48
runtime.goexit()
C:/Go/src/runtime/asm_amd64.s:2086 +0x1 fp=0xc0424ddfa8 sp=0xc0424ddfa0
goroutine 2 [force gc (idle), 8 minutes]:
runtime.gopark(0x534e98, 0x5ac210, 0x51c25d, 0xf, 0x534d14, 0x1)
C:/Go/src/runtime/proc.go:259 +0x14f fp=0xc04205ff28 sp=0xc04205fef8
runtime.goparkunlock(0x5ac210, 0x51c25d, 0xf, 0xc042058014, 0x1)
C:/Go/src/runtime/proc.go:265 +0x65 fp=0xc04205ff68 sp=0xc04205ff28
runtime.forcegchelper()
C:/Go/src/runtime/proc.go:224 +0xb6 fp=0xc04205ffa0 sp=0xc04205ff68
runtime.goexit()
C:/Go/src/runtime/asm_amd64.s:2086 +0x1 fp=0xc04205ffa8 sp=0xc04205ffa0
created by runtime.init.4
C:/Go/src/runtime/proc.go:213 +0x3c
goroutine 3 [GC sweep wait]:
runtime.gopark(0x534e98, 0x5ac3e0, 0x51bb3d, 0xd, 0x462c14, 0x1)
C:/Go/src/runtime/proc.go:259 +0x14f fp=0xc042061f18 sp=0xc042061ee8
runtime.goparkunlock(0x5ac3e0, 0x51bb3d, 0xd, 0x14, 0x1)
C:/Go/src/runtime/proc.go:265 +0x65 fp=0xc042061f58 sp=0xc042061f18
runtime.bgsweep(0xc0420040e0)
C:/Go/src/runtime/mgcsweep.go:79 +0x13c fp=0xc042061f98 sp=0xc042061f58
runtime.goexit()
C:/Go/src/runtime/asm_amd64.s:2086 +0x1 fp=0xc042061fa0 sp=0xc042061f98
created by runtime.gcenable
C:/Go/src/runtime/mgc.go:195 +0x68
goroutine 4 [finalizer wait, 8 minutes]:
runtime.gopark(0x534e98, 0x5c6870, 0x51bf5c, 0xe, 0x14, 0x1)
C:/Go/src/runtime/proc.go:259 +0x14f fp=0xc04205bee8 sp=0xc04205beb8
runtime.goparkunlock(0x5c6870, 0x51bf5c, 0xe, 0x14, 0x1)
C:/Go/src/runtime/proc.go:265 +0x65 fp=0xc04205bf28 sp=0xc04205bee8
runtime.runfinq()
C:/Go/src/runtime/mfinal.go:158 +0xc1 fp=0xc04205bfa0 sp=0xc04205bf28
runtime.goexit()
C:/Go/src/runtime/asm_amd64.s:2086 +0x1 fp=0xc04205bfa8 sp=0xc04205bfa0
created by runtime.createfing
C:/Go/src/runtime/mfinal.go:139 +0x7a
goroutine 5 [chan receive, 8 minutes]:
runtime.gopark(0x534e98, 0xc042072298, 0x51b961, 0xc, 0x17, 0x3)
C:/Go/src/runtime/proc.go:259 +0x14f fp=0xc04205de60 sp=0xc04205de30
runtime.goparkunlock(0xc042072298, 0x51b961, 0xc, 0x17, 0x3)
C:/Go/src/runtime/proc.go:265 +0x65 fp=0xc04205dea0 sp=0xc04205de60
runtime.chanrecv(0x4f1220, 0xc042072240, 0xc04205df80, 0x1, 0x0)
C:/Go/src/runtime/chan.go:496 +0x2ed fp=0xc04205df28 sp=0xc04205dea0
runtime.chanrecv2(0x4f1220, 0xc042072240, 0xc04205df80, 0x0)
C:/Go/src/runtime/chan.go:383 +0x35 fp=0xc04205df60 sp=0xc04205df28
database/sql.(*DB).connectionOpener(0xc0420e4000)
C:/Go/src/database/sql/sql.go:727 +0x51 fp=0xc04205df98 sp=0xc04205df60
runtime.goexit()
C:/Go/src/runtime/asm_amd64.s:2086 +0x1 fp=0xc04205dfa0 sp=0xc04205df98
created by database/sql.Open
C:/Go/src/database/sql/sql.go:493 +0x1ec
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