Hi, I am trying streaming with Zeppelin using the example given here: zepl.com <https://www.zepl.com/viewer/notebooks/aHR0cHM6Ly9yYXcuZ2l0aHVidXNlcmNvbnRlbnQuY29tL2hhZml6dXItcmFobWFuL2NjcC1jaGFsbGVuZ2UxL21hc3Rlci96ZXBwZWxpbi9ub3RlYm9vay8yQVdLWFhKTVgvbm90ZS5qc29u> But not able to get it to work. I have configured Spark interpreter with a master (spark://dk1:7077).
a) The first time it ran, the paragraph was in running state but it wasn't displaying any output (sent using nc command). Upon restarting it started giving error: java.lang.IllegalStateException: Only one StreamingContext may be started in this JVM. Currently running StreamingContext was started atorg.apache.spark.streaming.StreamingContext.start(StreamingContext.scala:569) I realized that I only have ssc.start() and there is no call to stop(). So in another paragraph I tried calling ssc.stop() before re-running my main paragraph but it is still not helping. My question is, what is the right way to start/stop streaming app so that we can run it multiple times back to back? Is my expectation that I should be seeing output in the same window correct? Pls let me know if any more info is needed. -Thanks Nikhil
