Hi, From the logs and the description of your test scenarios where data loss is observed and not observed, it seems like the differentiating factor here is whether or not the session windows trigger was first fired when the checkpoint occurred.
It doesn’t however explain the case where your tests pass on a standalone cluster. Have you also re-tested your scenarios on Cloudera, with Flink built against the Cloudera binaries? On 6 June 2017 at 4:53:30 PM, ninad (nni...@gmail.com) wrote: Hi Till, Attaching the logs to this post again. Thanks. jobManager.log <http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/file/n13527/jobManager.log> tmOne.log <http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/file/n13527/tmOne.log> tmTwo.log <http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/file/n13527/tmTwo.log> -- View this message in context: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Fink-KafkaProducer-Data-Loss-tp11413p13527.html Sent from the Apache Flink User Mailing List archive. mailing list archive at Nabble.com.