Soren Macbeth created SPARK-10251:
-------------------------------------
Summary: Some internal spark classes are not registered with kryo
Key: SPARK-10251
URL: https://issues.apache.org/jira/browse/SPARK-10251
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.4.1
Reporter: Soren Macbeth
When running a job using kryo serialization and setting
`spark.kryo.registrationRequired=true` some internal classes are not
registered, causing the job to die. This is still a problem when this setting
is false (which is the default) because it makes the space required to store
serialized objects in memory or disk much much more expensive in terms of
runtime and storage space.
```
15/08/25 20:28:21 WARN spark.scheduler.TaskSetManager: Lost task 0.0 in stage
0.0 (TID 0, a.b.c.d): java.lang.IllegalArgumentException: Class is not
registered: scala.Tuple2[]
Note: To register this class use: kryo.register(scala.Tuple2[].class);
at com.esotericsoftware.kryo.Kryo.getRegistration(Kryo.java:442)
at
com.esotericsoftware.kryo.util.DefaultClassResolver.writeClass(DefaultClassResolver.java:79)
at com.esotericsoftware.kryo.Kryo.writeClass(Kryo.java:472)
at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:565)
at
org.apache.spark.serializer.KryoSerializerInstance.serialize(KryoSerializer.scala:250)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:236)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
```
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
