有什么方法我只能从旧的偏移中寻找1条消息吗？

Question

我想知道有什么方法我只能从旧的偏移中寻找1条消息吗？因为我只想重新处理1条消息。

Answer 1

您应该实施ConsumerSeekAware并在其中：

/**
 * When using group management, called when partition assignments change.
 * @param assignments the new assignments and their current offsets.
 * @param callback the callback to perform an initial seek after assignment.
 */
void onPartitionsAssigned(Map<TopicPartition, Long> assignments, ConsumerSeekCallback callback);

对所需的-1执行所需的partition，其offset作为该assignments地图的值。