Topic creation fails on large values
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Key: KAFKA-196
URL: https://issues.apache.org/jira/browse/KAFKA-196
Project: Kafka
Issue Type: Bug
Components: core
Reporter: Pierre-Yves Ritschard
Attachments:
0001-Set-a-hard-limit-on-topic-width-this-fixes-KAFKA-196.patch
Since topic logs are stored in a directory holding the topic's name, creation
of the directory might fail for large strings.
This is not a problem per-se but the exception thrown is rather cryptic and
hard to figure out for operations.
I propose fixing this temporarily with a hard limit of 200 chars for topic
names, it would also be possible to hash the topic name.
Another concern is that the exception raised stops the broker, effectively
creating a simple DoS vector, I'm concerned about how tests or wrong client
library usage can take down the whole broker.
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