Github user XuMingmin commented on a diff in the pull request:
https://github.com/apache/storm/pull/1919#discussion_r99892349
--- Diff:
external/storm-kafka-client/src/main/java/org/apache/storm/kafka/spout/KafkaSpout.java
---
@@ -107,7 +107,8 @@ public void open(Map conf, TopologyContext context,
SpoutOutputCollector collect
// Offset management
firstPollOffsetStrategy =
kafkaSpoutConfig.getFirstPollOffsetStrategy();
- consumerAutoCommitMode =
kafkaSpoutConfig.isConsumerAutoCommitMode();
+ // with AutoCommitMode, topology works in 'At-Most-Once' mode, and
offset will be periodically committed in the background by Kafka consumer
--- End diff --
agree, let me update it
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