Grant Henke created KAFKA-3012:
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Summary: Reduce reserved.broker.max.id collisions on upgrade
Key: KAFKA-3012
URL: https://issues.apache.org/jira/browse/KAFKA-3012
Project: Kafka
Issue Type: Improvement
Affects Versions: 0.9.0.0
Reporter: Grant Henke
Assignee: Grant Henke
I have seen a few issues utilizing the default value of
reserved.broker.max.id=1000 in existing clusters during upgrades. For many that
started broker.ids at 0 and incremented by 1 this may not be an issue. However,
others may have very different numbering schemes.
Given that we have the entire Integer range to work with, I propose we increase
the default to a much larger value. This will help reduce upgrade issues and
also help more clearly identify generated broker ids.
Would defaulting to 1,000,000,000 be to large? Perhaps 1,000,000 is enough.
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