Re: Data+control stream from kafka + window function - not working

2017-03-20 Thread Aljoscha Krettek
What do you get form the sys out printing in CoFlatMapFunImpl? Could it be that all the elements are being processed before the control input element arrives and that they are therefore dropped? > On 17 Mar 2017, at 09:14, Tarandeep Singh wrote: > > Hi Gordon, > > When I use getInput (input c

Re: Data+control stream from kafka + window function - not working

2017-03-17 Thread Tarandeep Singh
Hi Gordon, When I use getInput (input created via collection), then watermarks are always Long.MAX_VALUE: WM: Watermark @ 9223372036854775807 This is understandable as input source has finished so a watermark of value Long.MAX_VALUE is emitted. When I use getKafkaInput, I get this watermark: WM:

Re: Data+control stream from kafka + window function - not working

2017-03-16 Thread Tzu-Li (Gordon) Tai
Hi Tarandeep, Thanks for clarifying. For the next step, I would recommend taking a look at  https://ci.apache.org/projects/flink/flink-docs-release-1.3/monitoring/debugging_event_time.html  and try to find out what exactly is wrong with the watermark progression. Flink 1.2 exposes watermarks as

Re: Data+control stream from kafka + window function - not working

2017-03-16 Thread Tarandeep Singh
Anyone? Any suggestions what could be going wrong or what I am doing wrong? Thanks, Tarandeep On Thu, Mar 16, 2017 at 7:34 AM, Tarandeep Singh wrote: > Data is read from Kafka and yes I use different group id every time I run > the code. I have put break points and print statements to verify t

Re: Data+control stream from kafka + window function - not working

2017-03-16 Thread Tarandeep Singh
Data is read from Kafka and yes I use different group id every time I run the code. I have put break points and print statements to verify that. Also, if I don't connect with control stream the window function works. - Tarandeep > On Mar 16, 2017, at 1:12 AM, Tzu-Li (Gordon) Tai wrote: > > H

Re: Data+control stream from kafka + window function - not working

2017-03-16 Thread Tzu-Li (Gordon) Tai
Hi Tarandeep, I haven’t looked at the rest of the code yet, but my first guess is that you might not be reading any data from Kafka at all: private static DataStream readKafkaStream(String topic, StreamExecutionEnvironment env) throws IOException { Properties properties = new Propertie