flowchartsman opened a new issue, #897:
URL: https://github.com/apache/pulsar-client-go/issues/897
```go
producer, err := client.CreateProducer(ProducerOptions{
Topic: newTopicName(),
DisableBatching: true,
})
ID, err := producer.Send(context.Background(), &ProducerMessage{
Payload: []byte("hello"),
})
producer.Flush()
```
```
[signal SIGSEGV: segmentation violation code=0x1 addr=0x40 pc=0x1005cf756]
goroutine 13 [running]:
github.com/apache/pulsar-client-go/pulsar.(*partitionProducer).internalFlushCurrentBatch(0xc0007bc240)
/Users/me/go/pkg/mod/github.com/apache/[email protected]/pulsar/producer_partition.go:810
+0x36
github.com/apache/pulsar-client-go/pulsar.(*partitionProducer).internalFlush(0xc0007bc240,
0xc0006d6018)
/Users/me/go/pkg/mod/github.com/apache/[email protected]/pulsar/producer_partition.go:992
+0x3e
github.com/apache/pulsar-client-go/pulsar.(*partitionProducer).runEventsLoop(0xc0007bc240)
/Users/me/go/pkg/mod/github.com/apache/[email protected]/pulsar/producer_partition.go:452
+0x114
created by github.com/apache/pulsar-client-go/pulsar.newPartitionProducer
/Users/me/go/pkg/mod/github.com/apache/[email protected]/pulsar/producer_partition.go:201
+0xaf6
```
#### Expected behavior
NOP?
#### Actual behavior
Panic
This is because `partitionProducer.internalFlushCurrentBatch()` is called
without checking to see if `partitionProducer.batchBuilder` is nil.
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