MarcoLotz commented on a change in pull request #10042:
URL: https://github.com/apache/kafka/pull/10042#discussion_r603182032
##########
File path:
streams/src/test/java/org/apache/kafka/streams/tools/StreamsResetterTest.java
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@@ -76,6 +79,30 @@ public void
testResetToSpecificOffsetWhenBetweenBeginningAndEndOffset() {
assertEquals(3, records.count());
}
+ @Test
+ public void
testResetToSpecificOffsetWhenPartitionIsEmptyResetsToLatestOffset() {
+ final MockConsumer<byte[], byte[]> emptyConsumer = new
MockConsumer<>(OffsetResetStrategy.EARLIEST);
+ emptyConsumer.assign(Collections.singletonList(topicPartition));
+
+ final Map<TopicPartition, Long> endOffsets = new HashMap<>();
+ endOffsets.put(topicPartition, 0L);
+ emptyConsumer.updateEndOffsets(endOffsets);
+
+ final Map<TopicPartition, Long> beginningOffsets = new HashMap<>();
+ beginningOffsets.put(topicPartition, 0L);
+ emptyConsumer.updateBeginningOffsets(beginningOffsets);
+ streamsResetter.resetOffsetsTo(emptyConsumer, inputTopicPartitions,
2L);
+ emptyConsumer.position(topicPartition);
+
+ emptyConsumer.commitSync();
Review comment:
Updated the code. I've confirmed that there are IT tests for it at
ResetIntegrationTest.java.
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