如何在Zeppelin上的Apache Spark中停止StreamingContext

Question

import org.apache.spark.streaming.{Seconds, StreamingContext}
import org.apache.spark.streaming.eventhubs.EventHubsUtils
import sqlContext.implicits._

val ehParams = Map[String, String](
    "eventhubs.policyname" -> "Full",
...
)

val ssc = new StreamingContext(sc, Seconds(2))
val stream = EventHubsUtils.createUnionStream(ssc, ehParams)
val cr = stream.window(Seconds(6))

case class Message(msg: String)
stream.map(msg=>Message(new String(msg))).foreachRDD(rdd=>rdd.toDF().registerTempTable("temp"))

stream.print
ssc.start

---

以上这个开始并运行良好,但我似乎无法阻止它.对%sql show tables的任何调用都将冻结.

我如何停止上面的StreamingContext？

Answer 1

ssc.stop 还会杀死Spark Context,需要重启解释器.

请ssc.stop(stopSparkContext=false, stopGracefully=true)改用.