Github user rmetzger commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2509#discussion_r89283319
  
    --- Diff: 
flink-streaming-connectors/flink-connector-kafka-0.8/src/main/java/org/apache/flink/streaming/connectors/kafka/internals/SimpleConsumerThread.java
 ---
    @@ -408,23 +412,32 @@ else if (partitionsRemoved) {
                }
        }
     
    -   private void getMissingOffsetsFromKafka(
    +   private void replaceEarliestOrLatestOffsetsWithActualValuesFromKafka(
                        List<KafkaTopicPartitionState<TopicAndPartition>> 
partitions) throws IOException
        {
                // collect which partitions we should fetch offsets for
    -           List<KafkaTopicPartitionState<TopicAndPartition>> 
partitionsToGetOffsetsFor = new ArrayList<>();
    +           List<KafkaTopicPartitionState<TopicAndPartition>> 
partitionsWithEarliestOffsetSetting = new ArrayList<>();
    --- End diff --
    
    I don't see why you need to copy the partitions into these lists.
    I think you can just go over the list and call getLastOffsetFromKafka with 
`part.getOffset()` as the last argument.


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