Re: Problem of submitting Spark task to cluster from eclipse IDE on Windows

[jiml]

Hi, a couple-three things. First, is this a Gradle project? SBT? Regardless
of the answer, convince yourself that you are getting this error from the
command line before doing anything else. Eclipse is awesome and it's also
really glitchy, I have seen too many times recently where something funky is
happening in Eclipse but I can go to the shell and "gradle build" and
"gradle run" things just fine.

Getting that out of the way, and I don't know yet how generally applicable
this idea is, get rid of ALL hostnames and try with just IP adresses. I
posted the results of some research I did this morning on SO:

http://stackoverflow.com/questions/28453835/apache-sparck-error-could-not-connect-to-akka-tcp-sparkmaster/34499020#34499020

Note that what I focus on is getting all spurious config out of the way.
Comment out all configs in spark-defaults.conf and sparv-env.sh that refer
to IP or Master config, just do only this: On the master, in spark-env.sh,
set the SPARK_MASTER_IP to the IP address, not hostname. Then use IP
addresses in your call to Spark Context. See what happens.

I know what you are seeing is two different bits of code working differently
but I would bet it's an underlying Spark config issue. The important part is
the master log which clearly identifies a network problem. As noted in my SO
post, there's a bug out there that leads me to always use IP addresses but I
am not sure how widely applicable that answer is :)

If that doesn't work, please post what is the different between "WordCount
MapReduce job"  and "Spark Wordcount" -- that's not clear to me. Post your
SparkConf and Spark Context calls.

JimL


   I'm new to Spark. Before I describe the problem, I'd like to let you know
the role of the machines that organize the cluster and the purpose of my
work. By reading and follwing the instructions and tutorials, I successfully
built up a cluster with 7 CentOS-6.5 machines. I installed Hadoop 2.7.1,
Spark 1.5.1, Scala 2.10.4 and ZooKeeper 3.4.5 on them. The details are
listed as below:


 As all the other guys in our group are in the habit of eclipse on Windows,
I'm trying to work on this. I have successfully submitted the WordCount
MapReduce job to YARN and it run smoothly through eclipse and Windows. But
when I tried to run the Spark WordCount, it gives me the following error in
the eclipse console:

...

15/12/23 11:15:33 ERROR ErrorMonitor: dropping message [class
akka.actor.ActorSelectionMessage] for non-local recipient
[Actor[akka.tcp://sparkMaster@10.20.17.70:7077/]] arriving at
[akka.tcp://sparkMaster@10.20.17.70:7077] inbound addresses are
[akka.tcp://sparkMaster@hadoop00:7077]
akka.event.Logging$Error$NoCause$
15/12/23 11:15:53 INFO Master: 10.20.6.23:56374 got disassociated, removing
it.
15/12/23 11:15:53 INFO Master: 10.20.6.23:56374 got disassociated, removing
it.
15/12/23 11:15:53 WARN ReliableDeliverySupervisor: Association with remote
system [akka.tcp://sparkDriver@10.20.6.23:56374] has failed, address is now
gated for [5000] ms. Reason: [Disassociated] 
...

   object WordCount{
  def main(args: Array[String]){
val conf = new SparkConf().setAppName("Scala
WordCount").setMaster("spark://10.20.17.70:7077").setJars(List("C:\\Temp\\test.jar"));
val sc = new SparkContext(conf);
val textFile = sc.textFile("hdfs://10.20.17.70:9000/wc/indata/wht.txt");
textFile.flatMap(_.split(" ")).map((_,
1)).reduceByKey(_+_).collect().foreach(println);
  }
} 

 



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Re: Problem of submitting Spark task to cluster from eclipse IDE on Windows

[Hokam Singh Chauhan]

Hi,

Use spark://hostname:7077 as spark master if you are using IP address in
place of hostname.

I have faced the same issue, it got resolved by using hostname in spark
master instead of using IP address.

Regards,
Hokam
On 23 Dec 2015 13:41, "Akhil Das"  wrote:

> You need to:
>
> 1. Make sure your local router have NAT enabled and port forwarded the
> networking ports listed here
> .
> 2. Make sure on your clusters 7077 is accessible from your local (public)
> ip address. You can try telnet 10.20.17.70 7077
> 3. Set spark.driver.host so that the cluster can connect back to your
> machine.
>
>
>
> Thanks
> Best Regards
>
> On Wed, Dec 23, 2015 at 10:02 AM, superbee84  wrote:
>
>> Hi All,
>>
>>I'm new to Spark. Before I describe the problem, I'd like to let you
>> know
>> the role of the machines that organize the cluster and the purpose of my
>> work. By reading and follwing the instructions and tutorials, I
>> successfully
>> built up a cluster with 7 CentOS-6.5 machines. I installed Hadoop 2.7.1,
>> Spark 1.5.1, Scala 2.10.4 and ZooKeeper 3.4.5 on them. The details are
>> listed as below:
>>
>>
>> Host Name  |  IP Address  |  Hadoop 2.7.1 | Spark 1.5.1|
>> ZooKeeper
>> hadoop00   | 10.20.17.70  | NameNode(Active)   | Master(Active)   |   none
>> hadoop01   | 10.20.17.71  | NameNode(Standby)| Master(Standby) |   none
>> hadoop02   | 10.20.17.72  | ResourceManager(Active)| none  |
>>  none
>> hadoop03   | 10.20.17.73  | ResourceManager(Standby)| none|  none
>> hadoop04   | 10.20.17.74  | DataNode  |  Worker  |
>> JournalNode
>> hadoop05   | 10.20.17.75  | DataNode  |  Worker  |
>> JournalNode
>> hadoop06   | 10.20.17.76  | DataNode  |  Worker  |
>> JournalNode
>>
>>Now my *purpose* is to develop Hadoop/Spark applications on my own
>> computer(IP: 10.20.6.23) and submit them to the remote cluster. As all the
>> other guys in our group are in the habit of eclipse on Windows, I'm trying
>> to work on this. I have successfully submitted the WordCount MapReduce job
>> to YARN and it run smoothly through eclipse and Windows. But when I tried
>> to
>> run the Spark WordCount, it gives me the following error in the eclipse
>> console:
>>
>> 15/12/23 11:15:30 INFO AppClient$ClientEndpoint: Connecting to master
>> spark://10.20.17.70:7077...
>> 15/12/23 11:15:50 ERROR SparkUncaughtExceptionHandler: Uncaught exception
>> in
>> thread Thread[appclient-registration-retry-thread,5,main]
>> java.util.concurrent.RejectedExecutionException: Task
>> java.util.concurrent.FutureTask@29ed85e7 rejected from
>> java.util.concurrent.ThreadPoolExecutor@28f21632[Running, pool size = 1,
>> active threads = 0, queued tasks = 0, completed tasks = 1]
>> at
>>
>> java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(Unknown
>> Source)
>> at java.util.concurrent.ThreadPoolExecutor.reject(Unknown Source)
>> at java.util.concurrent.ThreadPoolExecutor.execute(Unknown Source)
>> at java.util.concurrent.AbstractExecutorService.submit(Unknown
>> Source)
>> at
>>
>> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anonfun$tryRegisterAllMasters$1.apply(AppClient.scala:96)
>> at
>>
>> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anonfun$tryRegisterAllMasters$1.apply(AppClient.scala:95)
>> at
>>
>> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
>> at
>>
>> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
>> at
>>
>> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
>> at
>> scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:108)
>> at
>> scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
>> at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:108)
>> at
>>
>> org.apache.spark.deploy.client.AppClient$ClientEndpoint.tryRegisterAllMasters(AppClient.scala:95)
>> at
>>
>> org.apache.spark.deploy.client.AppClient$ClientEndpoint.org$apache$spark$deploy$client$AppClient$ClientEndpoint$$registerWithMaster(AppClient.scala:121)
>> at
>>
>> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anon$2$$anonfun$run$1.apply$mcV$sp(AppClient.scala:132)
>> at org.apache.spark.util.Utils$.tryOrExit(Utils.scala:1119)
>> at
>>
>> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anon$2.run(AppClient.scala:124)
>> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
>> Source)
>> at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
>> at
>>
>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
>> Source)
>> at
>>
>> 

?????? Problem of submitting Spark task to cluster from eclipse IDE on Windows

[????????????]

Hi Hokam,


Thank you very much. Your approach really works after I set hostname/IP in 
the Windows hosts file. However, new error information comes out. I think it's 
very common as I have seen such information in many places. 
Here's part of information from Eclipse console.


15/12/24 11:59:08 INFO SparkDeploySchedulerBackend: Granted executor ID 
app-20151224105757-0002/92 on hostPort 10.20.17.74:44097 with 4 cores, 1024.0 
MB RAM
15/12/24 11:59:08 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/92 is now LOADING
15/12/24 11:59:08 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/92 is now RUNNING
15/12/24 11:59:12 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 11:59:27 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 11:59:42 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 11:59:57 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 12:00:12 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 12:00:27 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 12:00:42 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 12:00:57 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources
15/12/24 12:01:08 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/90 is now EXITED (Command exited with code 1)
15/12/24 12:01:08 INFO SparkDeploySchedulerBackend: Executor 
app-20151224105757-0002/90 removed: Command exited with code 1
15/12/24 12:01:08 INFO SparkDeploySchedulerBackend: Asked to remove 
non-existent executor 90
15/12/24 12:01:08 INFO AppClient$ClientEndpoint: Executor added: 
app-20151224105757-0002/93 on worker-20151221140040-10.20.17.76-33817 
(10.20.17.76:33817) with 4 cores
15/12/24 12:01:08 INFO SparkDeploySchedulerBackend: Granted executor ID 
app-20151224105757-0002/93 on hostPort 10.20.17.76:33817 with 4 cores, 1024.0 
MB RAM
15/12/24 12:01:08 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/93 is now LOADING
15/12/24 12:01:08 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/93 is now RUNNING
15/12/24 12:01:09 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/91 is now EXITED (Command exited with code 1)
15/12/24 12:01:09 INFO SparkDeploySchedulerBackend: Executor 
app-20151224105757-0002/91 removed: Command exited with code 1
15/12/24 12:01:09 INFO SparkDeploySchedulerBackend: Asked to remove 
non-existent executor 91
15/12/24 12:01:09 INFO AppClient$ClientEndpoint: Executor added: 
app-20151224105757-0002/94 on worker-20151221140040-10.20.17.75-47807 
(10.20.17.75:47807) with 4 cores
15/12/24 12:01:09 INFO SparkDeploySchedulerBackend: Granted executor ID 
app-20151224105757-0002/94 on hostPort 10.20.17.75:47807 with 4 cores, 1024.0 
MB RAM
15/12/24 12:01:09 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/94 is now LOADING
15/12/24 12:01:09 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/94 is now RUNNING
15/12/24 12:01:10 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/92 is now EXITED (Command exited with code 1)
15/12/24 12:01:10 INFO SparkDeploySchedulerBackend: Executor 
app-20151224105757-0002/92 removed: Command exited with code 1
15/12/24 12:01:10 INFO SparkDeploySchedulerBackend: Asked to remove 
non-existent executor 92
15/12/24 12:01:10 INFO AppClient$ClientEndpoint: Executor added: 
app-20151224105757-0002/95 on worker-20151221193318-10.20.17.74-44097 
(10.20.17.74:44097) with 4 cores
15/12/24 12:01:10 INFO SparkDeploySchedulerBackend: Granted executor ID 
app-20151224105757-0002/95 on hostPort 10.20.17.74:44097 with 4 cores, 1024.0 
MB RAM
15/12/24 12:01:10 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/95 is now LOADING
15/12/24 12:01:10 INFO AppClient$ClientEndpoint: Executor updated: 
app-20151224105757-0002/95 is now RUNNING
15/12/24 12:01:12 WARN TaskSchedulerImpl: Initial job has not accepted any 
resources; check your cluster UI to ensure that workers are registered and have 
sufficient resources

Re: Problem of submitting Spark task to cluster from eclipse IDE on Windows

[Akhil Das]

You need to:

1. Make sure your local router have NAT enabled and port forwarded the
networking ports listed here
.
2. Make sure on your clusters 7077 is accessible from your local (public)
ip address. You can try telnet 10.20.17.70 7077
3. Set spark.driver.host so that the cluster can connect back to your
machine.



Thanks
Best Regards

On Wed, Dec 23, 2015 at 10:02 AM, superbee84  wrote:

> Hi All,
>
>I'm new to Spark. Before I describe the problem, I'd like to let you
> know
> the role of the machines that organize the cluster and the purpose of my
> work. By reading and follwing the instructions and tutorials, I
> successfully
> built up a cluster with 7 CentOS-6.5 machines. I installed Hadoop 2.7.1,
> Spark 1.5.1, Scala 2.10.4 and ZooKeeper 3.4.5 on them. The details are
> listed as below:
>
>
> Host Name  |  IP Address  |  Hadoop 2.7.1 | Spark 1.5.1|
> ZooKeeper
> hadoop00   | 10.20.17.70  | NameNode(Active)   | Master(Active)   |   none
> hadoop01   | 10.20.17.71  | NameNode(Standby)| Master(Standby) |   none
> hadoop02   | 10.20.17.72  | ResourceManager(Active)| none  |   none
> hadoop03   | 10.20.17.73  | ResourceManager(Standby)| none|  none
> hadoop04   | 10.20.17.74  | DataNode  |  Worker  |
> JournalNode
> hadoop05   | 10.20.17.75  | DataNode  |  Worker  |
> JournalNode
> hadoop06   | 10.20.17.76  | DataNode  |  Worker  |
> JournalNode
>
>Now my *purpose* is to develop Hadoop/Spark applications on my own
> computer(IP: 10.20.6.23) and submit them to the remote cluster. As all the
> other guys in our group are in the habit of eclipse on Windows, I'm trying
> to work on this. I have successfully submitted the WordCount MapReduce job
> to YARN and it run smoothly through eclipse and Windows. But when I tried
> to
> run the Spark WordCount, it gives me the following error in the eclipse
> console:
>
> 15/12/23 11:15:30 INFO AppClient$ClientEndpoint: Connecting to master
> spark://10.20.17.70:7077...
> 15/12/23 11:15:50 ERROR SparkUncaughtExceptionHandler: Uncaught exception
> in
> thread Thread[appclient-registration-retry-thread,5,main]
> java.util.concurrent.RejectedExecutionException: Task
> java.util.concurrent.FutureTask@29ed85e7 rejected from
> java.util.concurrent.ThreadPoolExecutor@28f21632[Running, pool size = 1,
> active threads = 0, queued tasks = 0, completed tasks = 1]
> at
>
> java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(Unknown
> Source)
> at java.util.concurrent.ThreadPoolExecutor.reject(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor.execute(Unknown Source)
> at java.util.concurrent.AbstractExecutorService.submit(Unknown
> Source)
> at
>
> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anonfun$tryRegisterAllMasters$1.apply(AppClient.scala:96)
> at
>
> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anonfun$tryRegisterAllMasters$1.apply(AppClient.scala:95)
> at
>
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
> at
>
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
> at
>
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at
> scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:108)
> at
> scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
> at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:108)
> at
>
> org.apache.spark.deploy.client.AppClient$ClientEndpoint.tryRegisterAllMasters(AppClient.scala:95)
> at
>
> org.apache.spark.deploy.client.AppClient$ClientEndpoint.org$apache$spark$deploy$client$AppClient$ClientEndpoint$$registerWithMaster(AppClient.scala:121)
> at
>
> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anon$2$$anonfun$run$1.apply$mcV$sp(AppClient.scala:132)
> at org.apache.spark.util.Utils$.tryOrExit(Utils.scala:1119)
> at
>
> org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anon$2.run(AppClient.scala:124)
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
> Source)
> at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
> at
>
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
> Source)
> at
>
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
> Source)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
> Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source)
> at java.lang.Thread.run(Unknown Source)
> 15/12/23 11:15:50 INFO DiskBlockManager: Shutdown hook called
> 15/12/23 11:15:50 INFO ShutdownHookManager: Shutdown hook called
>
> Then 

Problem of submitting Spark task to cluster from eclipse IDE on Windows

[superbee84]

Hi All,

   I'm new to Spark. Before I describe the problem, I'd like to let you know
the role of the machines that organize the cluster and the purpose of my
work. By reading and follwing the instructions and tutorials, I successfully
built up a cluster with 7 CentOS-6.5 machines. I installed Hadoop 2.7.1,
Spark 1.5.1, Scala 2.10.4 and ZooKeeper 3.4.5 on them. The details are
listed as below:


Host Name  |  IP Address  |  Hadoop 2.7.1 | Spark 1.5.1| 
ZooKeeper 
hadoop00   | 10.20.17.70  | NameNode(Active)   | Master(Active)   |   none
hadoop01   | 10.20.17.71  | NameNode(Standby)| Master(Standby) |   none
hadoop02   | 10.20.17.72  | ResourceManager(Active)| none  |   none
hadoop03   | 10.20.17.73  | ResourceManager(Standby)| none|  none
hadoop04   | 10.20.17.74  | DataNode  |  Worker  |
JournalNode
hadoop05   | 10.20.17.75  | DataNode  |  Worker  |
JournalNode
hadoop06   | 10.20.17.76  | DataNode  |  Worker  |
JournalNode

   Now my *purpose* is to develop Hadoop/Spark applications on my own
computer(IP: 10.20.6.23) and submit them to the remote cluster. As all the
other guys in our group are in the habit of eclipse on Windows, I'm trying
to work on this. I have successfully submitted the WordCount MapReduce job
to YARN and it run smoothly through eclipse and Windows. But when I tried to
run the Spark WordCount, it gives me the following error in the eclipse
console:

15/12/23 11:15:30 INFO AppClient$ClientEndpoint: Connecting to master
spark://10.20.17.70:7077...
15/12/23 11:15:50 ERROR SparkUncaughtExceptionHandler: Uncaught exception in
thread Thread[appclient-registration-retry-thread,5,main]
java.util.concurrent.RejectedExecutionException: Task
java.util.concurrent.FutureTask@29ed85e7 rejected from
java.util.concurrent.ThreadPoolExecutor@28f21632[Running, pool size = 1,
active threads = 0, queued tasks = 0, completed tasks = 1]
at
java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(Unknown
Source)
at java.util.concurrent.ThreadPoolExecutor.reject(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.execute(Unknown Source)
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
at
org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anonfun$tryRegisterAllMasters$1.apply(AppClient.scala:96)
at
org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anonfun$tryRegisterAllMasters$1.apply(AppClient.scala:95)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at
scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:108)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:108)
at
org.apache.spark.deploy.client.AppClient$ClientEndpoint.tryRegisterAllMasters(AppClient.scala:95)
at
org.apache.spark.deploy.client.AppClient$ClientEndpoint.org$apache$spark$deploy$client$AppClient$ClientEndpoint$$registerWithMaster(AppClient.scala:121)
at
org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anon$2$$anonfun$run$1.apply$mcV$sp(AppClient.scala:132)
at org.apache.spark.util.Utils$.tryOrExit(Utils.scala:1119)
at
org.apache.spark.deploy.client.AppClient$ClientEndpoint$$anon$2.run(AppClient.scala:124)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
15/12/23 11:15:50 INFO DiskBlockManager: Shutdown hook called
15/12/23 11:15:50 INFO ShutdownHookManager: Shutdown hook called

Then I checked the Spark Master log, and find the following critical
statements:

15/12/23 11:15:33 ERROR ErrorMonitor: dropping message [class
akka.actor.ActorSelectionMessage] for non-local recipient
[Actor[akka.tcp://sparkMaster@10.20.17.70:7077/]] arriving at
[akka.tcp://sparkMaster@10.20.17.70:7077] inbound addresses are
[akka.tcp://sparkMaster@hadoop00:7077]
akka.event.Logging$Error$NoCause$
15/12/23 11:15:53 INFO Master: 10.20.6.23:56374 got disassociated, removing
it.
15/12/23 11:15:53 INFO Master: 10.20.6.23:56374 got disassociated, removing
it.
15/12/23 11:15:53 WARN ReliableDeliverySupervisor: Association with remote
system