Hello everyone. I would like to start the vote for PIP-242 https://github.com/apache/pulsar/issues/19239, Please let me know if you have any concerns or questions.
Best, Mattison ------- Paste original PIP content to help quote ------ ### Motivation Currently, the Apache Pulsar broker allows users to create a topic name that includes `-partition-`, which is confusing for our developers to identify whether this is a partition of a partitioned topic. Plus, we need to add more logic to be compatible with this special topic name. for example: - https://github.com/apache/pulsar/pull/19240 - https://github.com/apache/pulsar/pull/19230 - https://github.com/apache/pulsar/pull/19171 - https://github.com/apache/pulsar/pull/19086 - ... ### Goal This proposal wants `-partition-` to be a topic name keyword. Users can only create a topic with it if the topic is partitioned. For the compatibility reason, we want to Introduce a new configuration - `enableStrictTopicName` for the broker to help reject creating a topic in the following cases: 1. Create a partitioned topic that includes `-partition-`. 2. Create a topic which is not a partitioned topic. **Create a topic:** _no corresponding partitioned topic_ - persistent://public/default/local-name (passed) - persistent://public/default/local-name-partition-z (rejected by keyword) - persistent://public/default/local-name-partition-0 (rejected by keyword) _Has corresponding partitioned topic, **partitions=2** and topic partition name is **persistent://public/default/local-name**_ - persistent://public/default/local-name-partition-0 (passed, Because it is the partition topic's sub-partition) - persistent://public/default/local-name-partition-z (rejected by keyword) - persistent://public/default/local-name-partition-4 (rejected, Because it exceeds the number of maximum partitions) **Create a partitioned topic(topic metadata)** - persistent://public/default/local-name (passed) - persistent://public/default/local-name-partition-z (rejected by keyword) - persistent://public/default/local-name-partition-0 (rejected by keyword) ### API Changes Add a new configuration, `enableStrictTopicName=false`. ### Implementation 1. Add configuration `enableStrictTopicName=false`. 2. Add rejection logic when the user enables `enableStrictTopicName`. 4. Add warning logs to inform users that we do not recommend creating non-partitioned topics with the keyword `-partition-`. 5. Make `enableStrictTopicName=true` in the next major release.
