Hi!
We are using Samza 0.7.0 and we've encountered a bug. We have a WindowableTask and the window method is called twice every time (every task.window.ms interval). Code:

@Override
public void window(MessageCollector collector, TaskCoordinator coordinator) throws Exception {
    logger.info("tick");
}

Log (task.window.ms=1000):

2014-11-27 07:47:27,503 INFO [main] bids.AllBidTask - tick 
2014-11-27 07:47:27,503 INFO [main] bids.AllBidTask - tick 
2014-11-27 07:47:28,510 INFO [main] bids.AllBidTask - tick 
2014-11-27 07:47:28,510 INFO [main] bids.AllBidTask - tick 
2014-11-27 07:47:29,517 INFO [main] bids.AllBidTask - tick 
2014-11-27 07:47:29,517 INFO [main] bids.AllBidTask - tick 
2014-11-27 07:47:30,523 INFO [main] bids.AllBidTask - tick 
2014-11-27 07:47:30,524 INFO [main] bids.AllBidTask - tick

Property file in attach. Do you please have any idea why this is happening? What can cause it?