Hi,

I have a sink writing data to InfluxDB. I’ve noticed that the sink gets 
multiple copies of upstream records..

Why does this happen, and how can I avoid it… ?

Below is a trace …showing 2 records (I have a parallelism of two) for each 
record in the ‘.printToError’ for the same stream.

Any help/suggestions appreciated.

Steve


1> Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=2F:A4:BD:56:EC:4D, sessionTime=15000}]
2> Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=17:8E:FC:7E:F7:20, sessionTime=20000}]
1> Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=40:07:2D:CB:41:07, sessionTime=5000}]
2> Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=28:24:0B:B6:42:CA, sessionTime=5000}]
1> Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=8F:13:AC:4A:DA:93, sessionTime=5000}]
2> Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=43:7D:8A:D4:7D:D7, sessionTime=5000}]
2> Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=77:CD:BD:48:EE:D8, sessionTime=5000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=2F:A4:BD:56:EC:4D, sessionTime=15000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=2F:A4:BD:56:EC:4D, sessionTime=15000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=17:8E:FC:7E:F7:20, sessionTime=20000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=17:8E:FC:7E:F7:20, sessionTime=20000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=40:07:2D:CB:41:07, sessionTime=5000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=40:07:2D:CB:41:07, sessionTime=5000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=28:24:0B:B6:42:CA, sessionTime=5000}]
18:41:27,351 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=28:24:0B:B6:42:CA, sessionTime=5000}]
18:41:27,352 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=8F:13:AC:4A:DA:93, sessionTime=5000}]
18:41:27,352 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=8F:13:AC:4A:DA:93, sessionTime=5000}]
18:41:27,352 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=43:7D:8A:D4:7D:D7, sessionTime=5000}]
18:41:27,352 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=43:7D:8A:D4:7D:D7, sessionTime=5000}]
18:41:27,352 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=77:CD:BD:48:EE:D8, sessionTime=5000}]
18:41:27,352 INFO  com.kloudspot.flink.sink.InfluxSink                          
 - Point [name=Presence, time=1490316086000, tags={ap=1OPUA7IKN9, 
associated=false, dwellTime=less_than_fifteen_mins, location=1OPUA7IKN9, 
returned=false, sessionEnd=false}, precision=MILLISECONDS, 
fields={client=77:CD:BD:48:EE:D8, sessionTime=5000}]

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