billowqiu opened a new issue #711:
URL: https://github.com/apache/pulsar-client-go/issues/711
#### Expected behavior
Tell us what should happen
#### Actual behavior
panic: sync: negative WaitGroup counter
goroutine 2204 [running]:
sync.(*WaitGroup).Add(0x18dbfc0, 0xc0020d8d40)
sync/waitgroup.go:74 +0x105
sync.(*WaitGroup).Done(...)
sync/waitgroup.go:99
github.com/apache/pulsar-client-go/pulsar.(*partitionProducer).Send.func1({0x1965558,
0xc01a1ab1d0}, 0xc01a841160, {0x0, 0x0})
github.com/apache/[email protected]/pulsar/producer_partition.go:722
+0x7e
github.com/apache/pulsar-client-go/pulsar.(*partitionProducer).ReceivedSendReceipt(0xc001017b00,
0xc017280480)
github.com/apache/[email protected]/pulsar/producer_partition.go:828
+0x7ef
github.com/apache/pulsar-client-go/pulsar/internal.(*connection).handleSendReceipt(0xc001188420,
0xc017280480)
github.com/apache/[email protected]/pulsar/internal/connection.go:673
+0xe8
github.com/apache/pulsar-client-go/pulsar/internal.(*connection).internalReceivedCommand(0xc001188420,
0xc006b31680, {0x0, 0x0})
github.com/apache/[email protected]/pulsar/internal/connection.go:558
+0x14a
github.com/apache/pulsar-client-go/pulsar/internal.(*connection).run(0xc001188420)
github.com/apache/[email protected]/pulsar/internal/connection.go:415
+0x3ba
github.com/apache/pulsar-client-go/pulsar/internal.(*connection).start.func1()
github.com/apache/[email protected]/pulsar/internal/connection.go:227
+0x65
created by
github.com/apache/pulsar-client-go/pulsar/internal.(*connection).start
github.com/apache/[email protected]/pulsar/internal/connection.go:223
+0x75
#### Steps to reproduce
How can we reproduce the issue
#### System configuration
**Pulsar version**: x.y
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