Hi Flink Dev,
I thought something will work easily with flink and it is simple enough ,yer I
am struggling to make it work.
I am using flink kinesis connector ..using 1.3-SNAPSHOT version.
Basically I am trying to bootstrap a stream with one event pushed into it as a
warmup inside flink job’s main method and I use aws kinesis client to simply
putrecord into a given stream.
My expectation is that now if I addSource to a kinesis stream the data stream
will consume the event I pushed.
//This is the method that pushes to the kinesis Stream “mystream”
publishToKinesis(“mystream”,regionName,data) ;
Properties consumerConfig = new Properties();
consumerConfig.setProperty(ConsumerConfigConstants.AWS_REGION, region);
consumerConfig.setProperty(ConsumerConfigConstants.DEFAULT_STREAM_INITIAL_POSITION,
ConsumerConfigConstants.InitialPosition.LATEST.toString());
consumerConfig.setProperty(ConsumerConfigConstants.AWS_CREDENTIALS_PROVIDER,
"AUTO");
final LocalFlinkMiniCluster cluster = new LocalFlinkMiniCluster(new
Configuration(), false);
cluster.start();
ObjectMapper mapper = new ObjectMapper();
final StreamExecutionEnvironment see =
StreamExecutionEnvironment.createRemoteEnvironment(
"localhost", cluster.getLeaderRPCPort());
DataStream<String> outputStream = see.addSource(new
FlinkKinesisConsumer<>("myStream", new MyDeserializerSchema(), consumerConfig));
for (Iterator<String> it = DataStreamUtils.collect(outputStream);
it.hasNext(); ) {
String actualOut = it.next();
ObjectNode actualOutNode = (ObjectNode)
mapper.readTree(actualOut);
//then I do want to either print it or do some further
validation etc.
}
……..
Not sure why the record that I published , FlinkKinesisConsumer is not able to
react to it, it keeps waiting for it…at the step it.next();
I print out the SequenceNumber I put the record at
2017-04-22 19:46:53,608 INFO [main] DLKnesisPublisher: Successfully published
record, of bytes :162810 partition key
:fb043b73-1d9d-447a-a593-b9c1bf3d4974-1492915604228 ShardId:
shardId-000000000000Sequence
number49572539577762637793132019619873654976833479400677703682 Stream
Name:mystream
And Flink job is logging this at the end where it is waiting
2017-04-22 19:47:29,423 INFO [Source: Custom Source (1/1)] KinesisDataFetcher:
Subtask 0 will be seeded with initial shard
KinesisStreamShard{streamName='mystream', shard='{ShardId:
shardId-000000000000,HashKeyRange: {StartingHashKey: 0,EndingHashKey:
340282366920938463463374607431768211455},SequenceNumberRange:
{StartingSequenceNumber:
49572531519165352852103352736022695959324427654906511362,}}'}, starting state
set as sequence number LATEST_SEQUENCE_NUM
2017-04-22 19:47:29,425 INFO [Source: Custom Source (1/1)] KinesisDataFetcher:
Subtask 0 will start consuming seeded shard
KinesisStreamShard{streamName=’mystream’, shard='{ShardId:
shardId-000000000000,HashKeyRange: {StartingHashKey: 0,EndingHashKey:
340282366920938463463374607431768211455},SequenceNumberRange:
{StartingSequenceNumber:
49572531519165352852103352736022695959324427654906511362,}}'} from sequence
number LATEST_SEQUENCE_NUM with ShardConsumer 0
Any clue will be awesome to clear my confusion.
Thanks
Sathi
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