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rgw.Transfergw/JobGetTaskMeta - {\"id\":18355}","trace":"bfd62bf1dc671141","span":"0"}
fatal error: concurrent map iteration and map write

goroutine 1569 [running]:
runtime.throw(0xec44fa, 0x26)
    /usr/local/go/src/runtime/panic.go:1116 +0x72 fp=0xc0011e66c0 sp=0xc0011e6690 pc=0x436bc2
runtime.mapiternext(0xc0017a9c80)
    /usr/local/go/src/runtime/map.go:853 +0x552 fp=0xc0011e6740 sp=0xc0011e66c0 pc=0x411312
reflect.mapiternext(0xc0017a9c80)
    /usr/local/go/src/runtime/map.go:1337 +0x2b fp=0xc0011e6758 sp=0xc0011e6740 pc=0x41228b
reflect.(*MapIter).Next(0xc0068e80e0, 0xd58900)
    /usr/local/go/src/reflect/value.go:1261 +0xdb fp=0xc0011e6780 sp=0xc0011e6758 pc=0x49c92b
internal/fmtsort.Sort(0xd67720, 0xc000280468, 0x1b5, 0x2)
    /usr/local/go/src/internal/fmtsort/sort.go:63 +0x1aa fp=0xc0011e6838 sp=0xc0011e6780 pc=0x4ae91a
fmt.(*pp).printValue(0xc0063e5860, 0xd67720, 0xc000280468, 0x1b5, 0x76, 0x2)
    /usr/local/go/src/fmt/print.go:773 +0xcd4 fp=0xc0011e6a10 sp=0xc0011e6838 pc=0x4e3134
fmt.(*pp).printValue(0xc0063e5860, 0xe433e0, 0xc000280420, 0x199, 0xc000000076, 0x1)
    /usr/local/go/src/fmt/print.go:810 +0x1ab9 fp=0xc0011e6be8 sp=0xc0011e6a10 pc=0x4e3f19
fmt.(*pp).printValue(0xc0063e5860, 0xdcb340, 0xc000280420, 0x16, 0x76, 0x0)
    /usr/local/go/src/fmt/print.go:880 +0x18be fp=0xc0011e6dc0 sp=0xc0011e6be8 pc=0x4e3d1e
fmt.(*pp).printArg(0xc0063e5860, 0xdcb340, 0xc000280420, 0x76)
    /usr/local/go/src/fmt/print.go:716 +0x292 fp=0xc0011e6e58 sp=0xc0011e6dc0 pc=0x4e1d32
fmt.(*pp).doPrintf(0xc0063e5860, 0xeb9dde, 0x1d, 0xc0011e7050, 0x2, 0x2)
    /usr/local/go/src/fmt/print.go:1030 +0x15a fp=0xc0011e6f40 sp=0xc0011e6e58 pc=0x4e552a
fmt.Sprintf(0xeb9dde, 0x1d, 0xc0011e7050, 0x2, 0x2, 0xc00103d401, 0xc0050e2660)
    /usr/local/go/src/fmt/print.go:219 +0x66 fp=0xc0011e6f98 sp=0xc0011e6f40 pc=0x4de576
log.Printf(0xeb9dde, 0x1d, 0xc0011e7050, 0x2, 0x2)
    /usr/local/go/src/log/log.go:320 +0x53 fp=0xc0011e6fe0 sp=0xc0011e6f98 pc=0x659423
github.com/toolkits/pkg/net/gobrpc.(*RPCClient).Call(0xc00028e840, 0xeb28d9, 0x15, 0xcfac00, 0xc0003772d8, 0xce33c0, 0xc0002743f8, 0xc0011e7140, 0x1, 0x1, ...)
    /root/go/pkg/mod/github.com/toolkits/pkg@v1.1.3/net/gobrpc/client.go:59 +0x262 fp=0xc0011e70d0 sp=0xc0011e6fe0 pc=0xc00682
mq.code.sangfor.org/CMP/aOPS/transfer-gateway/internal/thirdpartyclient.(*RpcClient).SafeCall(0xc000286540, 0xeb28d9, 0x15, 0xcfac00, 0xc0003772d8, 0xce33c0, 0xc0002743f8, 0x12a05f200, 0xc0003772d8, 0xc0011e7248)
    /root/go/src/mq.code.sangfor.org/CMP/aOPS/transfer-gateway/internal/thirdpartyclient/client.go:80 +0xc3 fp=0xc0011e71d0 sp=0xc0011e70d0 pc=0xc01003
mq.code.sangfor.org/CMP/aOPS/transfer-gateway/internal/thirdpartyclient/job.(*Job).GetTaskMeta(0xc00028a270, 0xc0003772d8, 0x10, 0xcfac00, 0xc0003772d8)

func (c *RPCClient) Call(method string, args interface{}, reply interface{}, callTimeout ...time.Duration) error {
	done := make(chan error, 1)

	go func() {
		err := c.rpcClient.Call(method, args, reply)
		done <- err
	}()

	timeout := c.callTimeout
	if len(callTimeout) > 0 {
		timeout = callTimeout[0]
	}

	select {
	case <-time.After(timeout):
		log.Printf("[W] rpc call timeout %v => %v", c.rpcClient, c.address) //这个打印log会打印rpcclient 导致map读写并发冲突
		return fmt.Errorf("timeout")
	case err := <-done:
		return err
	}

	return nil
}