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https://issues.apache.org/jira/browse/FLINK-31371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17772666#comment-17772666
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Enzo Dechaene commented on FLINK-31371:
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Hi [~syhily], any news for this ticket ?
> Support subscribing non-existed topics in Pulsar source
> -------------------------------------------------------
>
> Key: FLINK-31371
> URL: https://issues.apache.org/jira/browse/FLINK-31371
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Pulsar
> Affects Versions: 1.15.3
> Reporter: Enzo Dechaene
> Assignee: Yufan Sheng
> Priority: Major
>
> *Describe the bug*
> With a Pulsar 2.8.4 server, a Flink stream containing Pulsar sources or sinks
> will fail at startup if the topic doesn't exist.
>
> *To Reproduce*
> Create a stream with :
> * Flink 1.15.2
> * Pulsar 2.8.4
> * with a Pulsar source or sink linked to a non existant topic
> * Start the stream
>
> *Expected behavior*
> If the topic doesn't exist, it should be created at the first connection of
> the source or sink without error.
>
> *Additional context*
> In the TopicListSubscriber class of the connector, the method
> getSubscribedTopicPartitions() try to get the metadata of a topic by doing
> that :
>
> {code:java}
> TopicMetadata metadata = queryTopicMetadata(pulsarAdmin, topic);{code}
>
> If the topic doesn't exist, I get a NullPointerException on the metadata
> We created a previous
> [ticket|https://github.com/streamnative/pulsar-flink/issues/366] on the
> Pulsar connector and it was fixed
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