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From Sidney Feiner <sidney.fei...@startapp.com>
Subject Stopping StreamingContext
Date Thu, 29 Mar 2018 14:27:37 GMT
Hey,
I have a Spark Streaming application processing some events.
Sometimes, I want to stop the application if a get a specific event. I collect the executor's
results in the driver and based on those results, I kill the StreamingContext using StreamingContext.stop(stopSparkContext=true).
When I do that, I can see in the logs that the app is shutting down, closing receivers etc.
But when I go to the master's web UI I can still see the app under "Running Applications".
But if I click it, it says the endpoint doesn't exist.
When I check the open processes on the machine, I can see that the job's process is still
running.
Am I closing the application wrong?

Those are the logs once I call the stop() method:

2018-03-28 11:59:04 INFO  KafkaProducer:615 - Closing the Kafka producer with timeoutMillis
= 9223372036854775807 ms.
2018-03-28 11:59:04 INFO  ReceiverTracker:54 - Sent stop signal to all 1 receivers
2018-03-28 11:59:05 INFO  BlockManagerInfo:54 - Added input-0-1522238344750 in memory on i-va-spark1:59059
(size: 1632.0 B, free: 579.2 MB)
2018-03-28 11:59:05 ERROR ReceiverTracker:70 - Deregistered receiver for stream 0: Stopped
by driver
2018-03-28 11:59:05 INFO  BlockManagerInfo:54 - Added input-0-1522238345000 in memory on i-va-spark1:59059
(size: 272.0 B, free: 579.2 MB)
2018-03-28 11:59:05 INFO  TaskSetManager:54 - Finished task 0.0 in stage 2.0 (TID 70) in 30213
ms on i-va-spark1 (executor 0) (1/1)
2018-03-28 11:59:05 INFO  TaskSchedulerImpl:54 - Removed TaskSet 2.0, whose tasks have all
completed, from pool
2018-03-28 11:59:05 INFO  DAGScheduler:54 - ResultStage 2 (start at UserLocationHistoryJob.scala:38)
finished in 30.213 s
2018-03-28 11:59:05 INFO  ReceiverTracker:54 - All of the receivers have deregistered successfully
2018-03-28 11:59:05 INFO  ReceiverTracker:54 - ReceiverTracker stopped
2018-03-28 11:59:05 INFO  JobGenerator:54 - Stopping JobGenerator immediately
2018-03-28 11:59:05 INFO  RecurringTimer:54 - Stopped timer for JobGenerator after time 1522238340000
2018-03-28 11:59:05 INFO  JobGenerator:54 - Stopped JobGenerator
2018-03-28 11:59:07 INFO  JobScheduler:54 - Stopped JobScheduler
2018-03-28 11:59:07 INFO  StreamingContext:54 - StreamingContext stopped successfully
2018-03-28 11:59:07 INFO  BlockManagerInfo:54 - Removed broadcast_5_piece0 on 10.0.0.243:41976
in memory (size: 2.4 KB, free: 488.4 MB)
2018-03-28 11:59:07 INFO  BlockManagerInfo:54 - Removed broadcast_5_piece0 on i-va-spark1:59059
in memory (size: 2.4 KB, free: 579.2 MB)
2018-03-28 11:59:07 INFO  BlockManagerInfo:54 - Removed broadcast_4_piece0 on 10.0.0.243:41976
in memory (size: 23.9 KB, free: 488.4 MB)
2018-03-28 11:59:07 INFO  BlockManagerInfo:54 - Removed broadcast_4_piece0 on i-va-spark1:59059
in memory (size: 23.9 KB, free: 579.2 MB)
2018-03-28 11:59:37 WARN  QueuedThreadPool:178 - SparkUI{STOPPING,8<=9<=200,i=0,q=4}
Couldn't stop Thread[SparkUI-171-selector-ServerConnectorManager@478b3e9/2,5,main]
2018-03-28 11:59:37 WARN  QueuedThreadPool:178 - SparkUI{STOPPING,8<=9<=200,i=0,q=4}
Couldn't stop Thread[SparkUI-172-selector-ServerConnectorManager@478b3e9/3,5,main]
2018-03-28 11:59:37 WARN  QueuedThreadPool:178 - SparkUI{STOPPING,8<=9<=200,i=0,q=4}
Couldn't stop Thread[SparkUI-169-selector-ServerConnectorManager@478b3e9/0,5,main]
2018-03-28 11:59:37 WARN  QueuedThreadPool:178 - SparkUI{STOPPING,8<=9<=200,i=0,q=4}
Couldn't stop Thread[SparkUI-170-selector-ServerConnectorManager@478b3e9/1,5,main]
2018-03-28 13:22:01 INFO  DiskBlockManager:54 - Shutdown hook called
2018-03-28 13:22:01 INFO  ShutdownHookManager:54 - Shutdown hook called
2018-03-28 13:22:01 INFO  ShutdownHookManager:54 - Deleting directory /data/spark/scratch/spark-69a3a8a6-5504-4153-a4c1-059676861581
2018-03-28 13:22:01 INFO  ShutdownHookManager:54 - Deleting directory /data/spark/scratch/spark-69a3a8a6-5504-4153-a4c1-059676861581/userFiles-8a970eec-da41-442b-9ccf-1621b9e9e045



Sidney Feiner / SW Developer
M: +972.528197720 / Skype: sidney.feiner.startapp

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