vinothchandar commented on a change in pull request #8737:
URL: https://github.com/apache/kafka/pull/8737#discussion_r432166896
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File path: core/src/main/scala/kafka/admin/TopicCommand.scala
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@@ -259,7 +263,8 @@ object TopicCommand extends Logging {
override def alterTopic(opts: TopicCommandOptions): Unit = {
val topic = new CommandTopicPartition(opts)
val topics = getTopics(opts.topic, opts.excludeInternalTopics)
- ensureTopicExists(topics, opts.topic)
+ ensureTopicExists(topics, opts.topic, !opts.ifExists)
Review comment:
if the topic does not exist `ensureTopicExists()` will throw an
`IllegalArgumentException` right? Let me look at this and the other two closely
and get back
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