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From jay vyas <jayunit100.apa...@gmail.com>
Subject Re: Serialization and kryo
Date Sun, 16 Aug 2015 18:15:39 GMT
ah ok gotcha, sort of like this ?

ExecutionEnvironment.getExecutionEnvironment().registerTypeWithKryoSerializer(Product.class,
new com.esotericsoftware.kryo.Serializer<Product>() {


PS thanks, i think this should work... will update
On Sun, Aug 16, 2015 at 11:01 AM, Stephan Ewen <sewen@apache.org> wrote:

> Hi!
>
> The issue you refer to is: Flink automatically registers types it
> encounters at Kryo, if the types are not handled by Flink itself. You can
> turn that off in any program by
> "ExecutionEnvionment.getConfig().disableAutoTypeRegistration()".
>
> I am not sure that causes your problem, as this makes Kryo use tags rather
> then class names for the types.
>
> It may simply be that Kryo does not work with that data type out of the
> box. It my try to treat the guava immutable map like a regular mp, causing
> your exception. If that is really the problem, you can register a specific
> serializer via "ExecuionEnvironment.registerTypeWithKryoSerializer(...)."
>
> Let us know what is the problem in the end.
>
> Greetings,
> Stephan
>
>
> On Sun, Aug 16, 2015 at 4:54 PM, jay vyas <jayunit100.apache@gmail.com>
> wrote:
>
>>
>>    1. Just wanted to updated.. possibly I'm hitting ? FLINK-1417
>>    Automatically register nested types at Kryo
>>    <https://issues.apache.org/jira/browse/FLINK-1417> ...
>>
>>
>> On Sun, Aug 16, 2015 at 10:38 AM, jay vyas <jayunit100.apache@gmail.com>
>> wrote:
>>
>>> Hi flink.
>>>
>>> I just ran into the following serialization error in BigPetStore Flink.
>>>   It appears to be that someone is trying to add elements to a map during
>>> serialization.   I doubt this is a bug in flink because it would have
>>> surely been caught early on.
>>>
>>> Some possible explanations ...
>>>
>>> 1 - Probably its a conflict caused by my application's dependencies ?
>>>
>>> 2 - Or maybe just something about the way the mini-cluster sets up its
>>> dependencies?.
>>>
>>> 3 - Or... Is this related to a guava transitive dependency conflict?
>>>
>>> DETAILS
>>>
>>> Our data generator library has these dependencies... Just FYI...
>>> [INFO] \-
>>> com.github.rnowling.bigpetstore:bigpetstore-data-generator:jar:0.2.1:compile
>>> [INFO]    +- com.google.guava:guava:jar:18.0:compile
>>> [INFO]    \- com.google.code.gson:gson:jar:2.3:compile
>>>
>>>
>>> And, heres the exception:
>>>
>>> Caused by: com.esotericsoftware.kryo.KryoException:
>>> java.lang.UnsupportedOperationException
>>> Serialization trace:
>>> fields (com.github.rnowling.bps.datagenerator.datamodels.Product)
>>> products (com.github.rnowling.bps.datagenerator.datamodels.Transaction)
>>> 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.readClassAndObject(Kryo.java:761)
>>> at
>>> com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:116)
>>> at
>>> com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:22)
>>> at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:679)
>>> at
>>> com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
>>> at
>>> com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528)
>>> at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:761)
>>>
>>> Caused by: java.lang.UnsupportedOperationException
>>> at com.google.common.collect.ImmutableMap.put(ImmutableMap.java:326)
>>> at
>>> com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:144)
>>> at
>>> com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:21)
>>> at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:679)
>>> at
>>> com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
>>> ... 18 more
>>>
>>
>>
>>
>> --
>> jay vyas
>>
>
>


-- 
jay vyas

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