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https://issues.apache.org/jira/browse/FLINK-4523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15714544#comment-15714544
 ] 

ASF GitHub Bot commented on FLINK-4523:
---------------------------------------

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

    https://github.com/apache/flink/pull/2916#discussion_r90607632
  
    --- Diff: 
flink-streaming-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/proxy/KinesisProxy.java
 ---
    @@ -229,14 +232,33 @@ public GetShardListResult getShardList(Map<String, 
String> streamNamesWithLastSe
         * {@inheritDoc}
         */
        @Override
    -   public String getShardIterator(KinesisStreamShard shard, String 
shardIteratorType, @Nullable String startingSeqNum) throws InterruptedException 
{
    +   public String getShardIterator(KinesisStreamShard shard, String 
shardIteratorType, @Nullable Object startingMarker) throws InterruptedException 
{
    +           GetShardIteratorRequest getShardIteratorRequest = new 
GetShardIteratorRequest()
    +                   .withStreamName(shard.getStreamName())
    +                   .withShardId(shard.getShard().getShardId())
    +                   .withShardIteratorType(shardIteratorType);
    +
    +           switch (ShardIteratorType.fromValue(shardIteratorType)) {
    +                   case TRIM_HORIZON:
    +                   case LATEST:
    +                           break;
    +                   case AT_TIMESTAMP:
    +                           getShardIteratorRequest.setTimestamp((Date) 
startingMarker);
    --- End diff --
    
    For the new implementation of this method, we probably should handle type 
casting exceptions, and wrap them as `IllegalArgumentException`s. Since we're 
doing the property config validating locally, this really shouldn't happen, but 
it would be good to add handling type cast errors here to make this class 
self-contained.


> Allow Kinesis Consumer to start from specific timestamp / Date
> --------------------------------------------------------------
>
>                 Key: FLINK-4523
>                 URL: https://issues.apache.org/jira/browse/FLINK-4523
>             Project: Flink
>          Issue Type: New Feature
>          Components: Kinesis Connector
>            Reporter: Tzu-Li (Gordon) Tai
>            Assignee: Wei-Che Wei
>             Fix For: 1.2.0
>
>
> We had a Kinesis user requesting this feature on an offline chat.
> To be specific, we let all initial Kinesis shards be iterated starting from 
> records at the given timestamp.
> The AWS Java SDK we're using already provides API for this, so we can add 
> this functionality with fairly low overhead: 
> http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/kinesis/model/GetShardIteratorRequest.html#setTimestamp-java.util.Date-



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