Dr. Christian Betz created HIVE-7711:
----------------------------------------
Summary: Error Serializing GenericUDF
Key: HIVE-7711
URL: https://issues.apache.org/jira/browse/HIVE-7711
Project: Hive
Issue Type: Bug
Affects Versions: 0.13.0
Reporter: Dr. Christian Betz
I get an exception running a job with a GenericUDF in HIVE 0.13.0 (which was ok
in HIVE 0.12.0).
The org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc is serialized using
Kryo, trying to serialize stuff in my GenericUDF which is not serializable
(doesn't implement Serializable).
Switching to Kryo made the comment in ExprNodeGenericFuncDesc obsolte:
"/**
* In case genericUDF is Serializable, we will serialize the object.
*
* In case genericUDF does not implement Serializable, Java will remember the
* class of genericUDF and creates a new instance when deserialized. This is
* exactly what we want.
*/"
Find the stacktrace below, however, the description above should be clear.
Exception in thread "main"
org.apache.hive.com.esotericsoftware.kryo.KryoException:
java.lang.UnsupportedOperationException
Serialization trace:
value (java.util.concurrent.atomic.AtomicReference)
state (clojure.lang.Atom)
state (udfs.ArraySum)
genericUDF (org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc)
colExprMap (org.apache.hadoop.hive.ql.exec.SelectOperator)
childOperators (org.apache.hadoop.hive.ql.exec.TableScanOperator)
aliasToWork (org.apache.hadoop.hive.ql.plan.MapWork)
mapWork (org.apache.hadoop.hive.ql.plan.MapredWork)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:776)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:139)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:17)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:776)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:112)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:18)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:776)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:139)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:17)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:507)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:672)
at
org.apache.hadoop.hive.ql.exec.Utilities.deserializeObjectByKryo(Utilities.java:918)
at
org.apache.hadoop.hive.ql.exec.Utilities.deserializePlan(Utilities.java:826)
at
org.apache.hadoop.hive.ql.exec.Utilities.deserializePlan(Utilities.java:840)
at
org.apache.hadoop.hive.ql.exec.mr.ExecDriver.main(ExecDriver.java:738)
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.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.lang.UnsupportedOperationException
at clojure.lang.APersistentMap.put(APersistentMap.java:287)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:140)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:17)
at
org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
at
org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
... 41 more
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