zhichao-li created SPARK-6077:
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Summary: Multiple spark streaming tabs on UI when reuse the same
sparkcontext
Key: SPARK-6077
URL: https://issues.apache.org/jira/browse/SPARK-6077
Project: Spark
Issue Type: Bug
Components: Streaming, Web UI
Reporter: zhichao-li
Priority: Minor
Currently we would create a new streaming tab for each streamingContext even if
there's already one on the same sparkContext which would cause duplicate
StreamingTab created and none of them is taking effect.
snapshot:
https://www.dropbox.com/s/t4gd6hqyqo0nivz/bad%20multiple%20streamings.png?dl=0
How to reproduce:
1)
import org.apache.spark.SparkConf
import org.apache.spark.streaming.{Seconds, StreamingContext}
import org.apache.spark.storage.StorageLevel
val ssc = new StreamingContext(sc, Seconds(1))
val lines = ssc.socketTextStream("localhost", 9999,
StorageLevel.MEMORY_AND_DISK_SER)
val words = lines.flatMap(_.split(" "))
val wordCounts = words.map(x => (x, 1)).reduceByKey(_ + _)
wordCounts.print()
ssc.start()
.....
2)
ssc.stop(false)
val ssc = new StreamingContext(sc, Seconds(1))
val lines = ssc.socketTextStream("localhost", 9999,
StorageLevel.MEMORY_AND_DISK_SER)
val words = lines.flatMap(_.split(" "))
val wordCounts = words.map(x => (x, 1)).reduceByKey(_ + _)
wordCounts.print()
ssc.start()
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