Github user tzulitai commented on a diff in the pull request: https://github.com/apache/flink/pull/2822#discussion_r89119126 --- Diff: flink-streaming-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/proxy/KinesisProxy.java --- @@ -283,7 +285,7 @@ public String getShardIterator(KinesisStreamShard shard, String shardIteratorTyp * @param startShardId which shard to start with for this describe operation (earlier shard's infos will not appear in result) * @return the result of the describe stream operation */ - private DescribeStreamResult describeStream(String streamName, String startShardId) throws InterruptedException { + private DescribeStreamResult describeStream(String streamName, @Nullable String startShardId) throws InterruptedException { --- End diff -- Only Kinesis does. Kinesalite incorrectly ignores `startShardId`. It's marked `Nullable` here, because on fresh startups this method will be called with a `null` as the start ID (on startup there will be no shard Id to start from).
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