Re: Kryo Deserializer

Posted by 小多 on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Kryo-Deserializer-tp11191p11192.html

Hi Biswajit,

You can follow this is: https://ci.apache.org/projects/flink/flink-docs-release-1.1/apis/best_practices.html#register-a-custom-serializer-for-your-flink-program

Best regards,

Duo

On Sat, Jan 21, 2017 at 9:15 AM, Biswajit Das <[hidden email]> wrote:

Hello,

Having an issue with nested protobuf deserialization, event tried with register the class with Kryo like beloe but seems like no help ,  one of the options left for me is to write a custom serializer or convert the byte array to a Dictionary object .

val clazz = Class.forName("java.util.Collections$UnmodifiableCollection");
env.getConfig.registerTypeWithKryoSerializer(clazz,classOf[UnmodifiableCollectionsSerializer])


-----------
.ClickSchema$Click)
    at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528)
    at com.esotericsoftware.kryo.Kryo.readObjectOrNull(Kryo.java:730)
    at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:113)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528)
    at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:761)
    at org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:232)
    at org.apache.flink.streaming.runtime.streamrecord.StreamRecordSerializer.deserialize(StreamRecordSerializer.java:112)
    at org.apache.flink.streaming.runtime.streamrecord.StreamRecordSerializer.deserialize(StreamRecordSerializer.java:42)
    at org.apache.flink.runtime.plugable.NonReusingDeserializationDelegate.read(NonReusingDeserializationDelegate.java:55)
    at org.apache.flink.runtime.io.network.api.serialization.SpillingAdaptiveSpanningRecordDeserializer.getNextRecord(SpillingAdaptiveSpanningRecordDeserializer.java:116)
    at org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:156)
    at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:67)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:267)
    at org.apache.flink.runtime.taskmanager.Task.run(Task.java:642)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.UnsupportedOperationException
    at java.util.Collections$UnmodifiableCollection.add(Collections.java:1055)
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:109)
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSer
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