Crash on: rdkafka_roundrobin_assignor.c:97

[plachor]

Read the FAQ first: https://github.com/edenhill/librdkafka/wiki/FAQ

Description

Our application is based on dotnet 3.1. Until now we used Confluent.Kafka library 1.4.2 without issues.

After upgrade to 1.5.0 we found on our CI that our integration tests in docker-based environment are broken. Tests fail with log entry:

The active test run was aborted. Reason: Test host process crashed : dotnet: rdkafka_roundrobin_assignor.c:97: rd_kafka_roundrobin_assignor_assign_cb: Assertion `next < rd_list_cnt(&eligible_topic-> members)' failed.

Same tests run OK when started from Windows host directly from visual studio.
Same test run OK also when running them locally on Windows using dotnet test command (same runner used in docker)

Checklist

IMPORTANT: We will close issues where the checklist has not been completed.

Please provide the following information:

• librdkafka version (release number or git tag): 1.5.0 (through Confluent.Kafka)
• Apache Kafka version: 2.1.0
• librdkafka client configuration: partition.assignment.strategy=RoundRobin, api.version.request=true
• Operating system: docker-image based on: mcr.microsoft.com/dotnet/core/sdk:3.1.201
• Provide logs (with debug=.. as necessary) from librdkafka
• Provide broker log excerpts
• Critical issue

[plachor]

this was already reported on confluentinc/confluent-kafka-dotnet#1369

[TheFireCookie]

Nice work!
When is it forecast to release a new version with this fix?
Thanks,
Matthias.

[edenhill]

Mid october.