Thread safety when committing from multiple threads

[Ashish Shenoy]

Hi,

I have a multi-threaded Kafka consumer. I have auto commit disabled and
from each thread, I periodically call commitOffsets() to commit the offsets
to Kafka.

Is this thread safe ? What is the effect of calling commitOffsets()
concurrently from multiple threads ? Should the consumer writer ensure that
the call to commitOffsets() is synchronized across multiple threads ?

Thanks,
Ashish