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Posted to issues@spark.apache.org by "Fei Shao (JIRA)" <ji...@apache.org> on 2017/06/25 09:43:00 UTC
[jira] [Created] (SPARK-21206) the window slice of Dstream is wrong
Fei Shao created SPARK-21206:
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Summary: the window slice of Dstream is wrong
Key: SPARK-21206
URL: https://issues.apache.org/jira/browse/SPARK-21206
Project: Spark
Issue Type: Bug
Components: DStreams
Affects Versions: 2.1.0
Reporter: Fei Shao
the code is :
val conf = new SparkConf().setAppName("testDstream").setMaster("local[4]")
val ssc = new StreamingContext(conf, Seconds(1))
ssc.checkpoint( "path")
val lines = ssc.socketTextStream("IP", PORT)
lines.countByValueAndWindow( Seconds(2), Seconds(8)).foreachRDD( s => {
println( "RDD ID IS : " + s.id)
s.foreach( e => println("data is " + e._1 + " :" + e._2))
println()
})
The result is wrong.
I checked the log, it showed:
17/06/25 17:31:26 DEBUG ReducedWindowedDStream: Time 1498383086000 ms is valid
17/06/25 17:31:26 DEBUG ReducedWindowedDStream: Window time = 2000 ms
17/06/25 17:31:26 DEBUG ReducedWindowedDStream: Slide time = 8000 ms
17/06/25 17:31:26 DEBUG ReducedWindowedDStream: Zero time = 1498383078000 ms
17/06/25 17:31:26 DEBUG ReducedWindowedDStream: Current window = [1498383085000 ms, 1498383086000 ms]
17/06/25 17:31:26 DEBUG ReducedWindowedDStream: Previous window = [1498383077000 ms, 1498383078000 ms]
17/06/25 17:31:26 INFO ShuffledDStream: Slicing from 1498383077000 ms to 1498383084000 ms (aligned to 1498383077000 ms and 1498383084000 ms)
17/06/25 17:31:26 INFO ShuffledDStream: Time 1498383078000 ms is invalid as zeroTime is 1498383078000 ms , slideDuration is 1000 ms and difference is 0 ms
17/06/25 17:31:26 DEBUG ShuffledDStream: Time 1498383079000 ms is valid
17/06/25 17:31:26 DEBUG MappedDStream: Time 1498383079000 ms is valid
the slice time is wrong.
[BTW]: Team members,
If it was a bug, please don't fix it.I try to fix it myself.Thanks:)
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