Comment 2 for bug 1691002

librdkafka version used in the build machines:

16.04:
0.9.1-1
14.04:
0.9.0-0contrail0

These packages are old and the Traceback we see are confined only to library calls. On
cursory research, an upgrade to higher client library(librdkafka 0.9.4 or 0.9.5) is recommended
https://github.com/edenhill/librdkafka/issues/511
https://github.com/edenhill/librdkafka/issues/781

For now we will upgrade the build machines to newer librdkafka builds. If hit again, we would like
to have collector logs, kafka logs.