The number on threads grows as application continue on pooling message. I got almost 1000 threads hanging and a thousands of connection established. Here is the stack for a thread: 0x0000000000000000 ntdll.dll!NtWaitForSingleObject+0x14 mswsock.dll!Tcpip4_WSHOpenSocket2+0x332 mswsock.dll!sethostname+0x3081 mswsock.dll!Tcpip4_WSHStringToAddress+0x2424 ws2_32.dll!WSAIoctl+0x18f ws2_32.dll!WSAPoll+0x1ea librdkafka.DLL!rd_kafka_topic_partition_available+0x2701 librdkafka.DLL!rd_kafka_topic_partition_available+0x26a5 librdkafka.DLL!rd_kafka_wait_destroyed+0x86ea librdkafka.DLL!rd_kafka_wait_destroyed+0x35df librdkafka.DLL!rd_kafka_wait_destroyed+0x8dec librdkafka.DLL!rd_kafka_topic_result_error+0x452b KERNEL32.DLL!BaseThreadInitThunk+0x14 ntdll.dll!RtlUserThreadStart+0x21
Any idea of why that is happening? Best regards, Rus