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https://issues.apache.org/jira/browse/KYLIN-2684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Billy Liu updated KYLIN-2684:
-----------------------------
Summary: Fix Object.class not registered in Kyro issue with spark cubing
(was: Fix Object.class not registeredFailed to build cube with spark engine)
> Fix Object.class not registered in Kyro issue with spark cubing
> ---------------------------------------------------------------
>
> Key: KYLIN-2684
> URL: https://issues.apache.org/jira/browse/KYLIN-2684
> Project: Kylin
> Issue Type: Bug
> Components: Spark Engine
> Affects Versions: v2.1.0
> Environment: spark 1.6.3
> Reporter: peng.jianhua
> Assignee: peng.jianhua
> Priority: Blocker
> Labels: patch
> Fix For: v2.1.0
>
> Attachments:
> 0001-KYLIN-2684-Failed-to-build-cube-with-spark-engine.patch
>
>
> Failed to build cube with spark engine at "#7 Step Name: Build Cube with
> Spark".
> The error log is as following:
> Exception in thread "main" java.lang.RuntimeException: error execute
> org.apache.kylin.engine.spark.SparkCubingByLayer
> at
> org.apache.kylin.common.util.AbstractApplication.execute(AbstractApplication.java:42)
> at org.apache.kylin.common.util.SparkEntry.main(SparkEntry.java:44)
> 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.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
> at
> org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
> at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
> at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
> at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
> Caused by: com.esotericsoftware.kryo.KryoException:
> java.lang.IllegalArgumentException: Class is not registered: Object
> Note: To register this class use: kryo.register(Object.class);
> Serialization trace:
> cuboidTreeLock (org.apache.kylin.cube.model.CubeDesc)
> at
> com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:585)
> at
> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
> at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:568)
> at
> org.apache.spark.serializer.KryoSerializationStream.writeObject(KryoSerializer.scala:194)
> at
> org.apache.spark.broadcast.TorrentBroadcast$.blockifyObject(TorrentBroadcast.scala:203)
> at
> org.apache.spark.broadcast.TorrentBroadcast.writeBlocks(TorrentBroadcast.scala:102)
> at
> org.apache.spark.broadcast.TorrentBroadcast.<init>(TorrentBroadcast.scala:85)
> at
> org.apache.spark.broadcast.TorrentBroadcastFactory.newBroadcast(TorrentBroadcastFactory.scala:34)
> at
> org.apache.spark.broadcast.BroadcastManager.newBroadcast(BroadcastManager.scala:63)
> at org.apache.spark.SparkContext.broadcast(SparkContext.scala:1326)
> at
> org.apache.spark.api.java.JavaSparkContext.broadcast(JavaSparkContext.scala:639)
> at
> org.apache.kylin.engine.spark.SparkCubingByLayer.execute(SparkCubingByLayer.java:166)
> at
> org.apache.kylin.common.util.AbstractApplication.execute(AbstractApplication.java:37)
> ... 10 more
> Caused by: java.lang.IllegalArgumentException: Class is not registered: Object
> Note: To register this class use: kryo.register(Object.class);
> at com.esotericsoftware.kryo.Kryo.getRegistration(Kryo.java:442)
> at
> com.esotericsoftware.kryo.util.DefaultClassResolver.writeClass(DefaultClassResolver.java:79)
> at com.esotericsoftware.kryo.Kryo.writeClass(Kryo.java:472)
> at
> com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:561)
> ... 22 more
>
>
>
> Change 'private Object cuboidTreeLock = new Object();' to 'private byte[]
> cuboidTreeLock = new byte[0];' in CubeDesc.java to solve this problem.
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