I have a Docker image with Zeppelin 0.7.3 + Spark interpreter installed. I
also have Spark 2.4 distribution in that image.
When I launch this image on k8s and run the sample Spark notebook (Basic
Features (Spark)), it failed with a NullPointerException.
java.lang.NullPointerException
at org.apache.zeppelin.spark.Utils.invokeMethod(Utils.java:38)
at org.apache.zeppelin.spark.Utils.invokeMethod(Utils.java:33)
at
org.apache.zeppelin.spark.SparkInterpreter.createSparkContext_2(SparkInterpreter.java:398)
at
org.apache.zeppelin.spark.SparkInterpreter.createSparkContext(SparkInterpreter.java:387)
at
org.apache.zeppelin.spark.SparkInterpreter.getSparkContext(SparkInterpreter.java:146)
at
org.apache.zeppelin.spark.SparkInterpreter.open(SparkInterpreter.java:843)
at
org.apache.zeppelin.interpreter.LazyOpenInterpreter.open(LazyOpenInterpreter.java:70)
at
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:491)
at org.apache.zeppelin.scheduler.Job.run(Job.java:175)
at org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
The Zeppelin container was launched with below SPARK_SUBMIT_OPTIONS:
--conf spark.kubernetes.container.image=<spark2.4-docker-image> --conf
spark.executor.instances=2 --deploy-mode client --conf
spark.kubernetes.namespace=spark --conf
spark.driver.host=<zeppelin-container-IP> --conf
spark.kubernetes.driver.pod.name=<zeppelin-container-hostname> --conf
spark.kubernetes.authenticate.driver.serviceAccountName=default --conf
spark.ui.port=4040
The logs indicate that the task scheduler could not be instantiated:
ERROR [2019-01-17 13:58:11,881] ({pool-2-thread-2}
Utils.java[invokeMethod]:40) -
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.zeppelin.spark.Utils.invokeMethod(Utils.java:38)
at org.apache.zeppelin.spark.Utils.invokeMethod(Utils.java:33)
at
org.apache.zeppelin.spark.SparkInterpreter.createSparkSession(SparkInterpreter.java:368)
at
org.apache.zeppelin.spark.SparkInterpreter.getSparkSession(SparkInterpreter.java:233)
at
org.apache.zeppelin.spark.SparkInterpreter.open(SparkInterpreter.java:841)
at
org.apache.zeppelin.interpreter.LazyOpenInterpreter.open(LazyOpenInterpreter.java:70)
at
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:491)
at org.apache.zeppelin.scheduler.Job.run(Job.java:175)
at
org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.spark.SparkException: External scheduler cannot be
instantiated
at
org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2794)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:493)
at
org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2520)
at
org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:935)
at
org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:926)
at scala.Option.getOrElse(Option.scala:121)
at
org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:926)
... 20 more
Caused by: io.fabric8.kubernetes.client.KubernetesClientException:
Operation: [get] for kind: [Pod] with name:
[zep-zeppelin-with-spark-6956f448d9-mmtsk] in namespace: [spark] failed.
at
io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:62)
at
io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:71)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:228)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:184)
at
org.apache.spark.scheduler.cluster.k8s.ExecutorPodsAllocator$$anonfun$1.apply(ExecutorPodsAllocator.scala:57)
at
org.apache.spark.scheduler.cluster.k8s.ExecutorPodsAllocator$$anonfun$1.apply(ExecutorPodsAllocator.scala:55)
at scala.Option.map(Option.scala:146)
at
org.apache.spark.scheduler.cluster.k8s.ExecutorPodsAllocator.<init>(ExecutorPodsAllocator.scala:55)
at
org.apache.spark.scheduler.cluster.k8s.KubernetesClusterManager.createSchedulerBackend(KubernetesClusterManager.scala:89)
at
org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2788)
... 26 more
Caused by: java.net.ProtocolException: Unexpected status line: ^U^C^A^@^B^B
at okhttp3.internal.http.StatusLine.parse(StatusLine.java:69)
at
okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)
at
okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:75)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
at
okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
at
okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
at
okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
at
okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
at
io.fabric8.kubernetes.client.utils.HttpClientUtils$2.intercept(HttpClientUtils.java:93)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
at
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
at
okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:185)
at okhttp3.RealCall.execute(RealCall.java:69)
at
io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:377)
at
io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:343)
at
io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:312)
at
io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:295)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:783)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:217)
If I try to explicitly submit a simple job from within the zeppelin
container, in client mode, it works fine. This works fine:
<spark2.4-dir>/bin/spark-submit --master $MASTER --deploy-mode
client --name spark-pi --class org.apache.spark.examples.SparkPi
--conf spark.executor.instances=2 \
--conf spark.kubernetes.container.image=<spark2.4-docker-image>
--conf spark.kubernetes.namespace=spark --conf
spark.driver.host=<zeppelin-container-IP> \
--conf spark.kubernetes.driver.pod.name=<zeppelin-container-hostname>
--conf spark.kubernetes.authenticate.driver.serviceAccountName=spark \
local:///opt/spark/examples/jars/spark-examples_2.11-2.4.0.jar;
Anyone tried this or knows why it may not be working for me?
Thanks,
Amogh Shetkar
SnappyData Technologies (http://snappydata.io)
