Zhong Wang created ZEPPELIN-717:
-----------------------------------
Summary: ZeppelinContext may not be initialized properly in
concurrent mode
Key: ZEPPELIN-717
URL: https://issues.apache.org/jira/browse/ZEPPELIN-717
Project: Zeppelin
Issue Type: Bug
Components: zeppelin-interpreter
Affects Versions: 0.6.0
Reporter: Zhong Wang
When I run multiple notebooks concurrently, I can see such errors when I try to
use a ZeppelinContext:
{code}
<console>:23: error: not found: value z
{code}
I can also see such errors:
{code}
java.lang.NoClassDefFoundError: $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC
at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:42)
at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:44)
at $iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:46)
at $iwC$$iwC$$iwC$$iwC.<init>(<console>:48)
at $iwC$$iwC$$iwC.<init>(<console>:50)
at $iwC$$iwC.<init>(<console>:52)
at $iwC.<init>(<console>:54)
at <init>(<console>:56)
at .<init>(<console>:60)
at .<clinit>(<console>)
at .<init>(<console>:7)
at .<clinit>(<console>)
at $print(<console>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:1065)
at
org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1346)
at
org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:840)
at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:871)
at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:819)
at
org.apache.zeppelin.spark.SparkInterpreter.interpretInput(SparkInterpreter.java:780)
at
org.apache.zeppelin.spark.SparkInterpreter.interpret(SparkInterpreter.java:744)
at
org.apache.zeppelin.spark.SparkInterpreter.interpret(SparkInterpreter.java:737)
at
org.apache.zeppelin.interpreter.ClassloaderInterpreter.interpret(ClassloaderInterpreter.java:57)
at
org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:93)
at
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:331)
at org.apache.zeppelin.scheduler.Job.run(Job.java:171)
at
org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException:
$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC
at
scala.tools.nsc.interpreter.AbstractFileClassLoader.findClass(AbstractFileClassLoader.scala:83)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 37 more
{code}
I saw the issues after a quick fix of ZEPPELIN-716. I am not sure whether they
are related, but I will keep this radar open to keep track with.
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