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https://issues.apache.org/jira/browse/FLINK-8836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Richter closed FLINK-8836.
---------------------------------
Resolution: Fixed
Fix Version/s: 1.4.0
1.6.0
Merged in:
master: 321039f783cd5ba0b2a936e6fac7cca3c542ef3b
release 1.4: e3433d9300ad4ae35693ff76c2de987a37724c2f
release 1.5: 537f452d9ae89d55aca6a8907c23494ee553b3ec
> Duplicating a KryoSerializer does not duplicate registered default serializers
> ------------------------------------------------------------------------------
>
> Key: FLINK-8836
> URL: https://issues.apache.org/jira/browse/FLINK-8836
> Project: Flink
> Issue Type: Bug
> Components: Type Serialization System
> Reporter: Tzu-Li (Gordon) Tai
> Assignee: Stefan Richter
> Priority: Blocker
> Fix For: 1.5.0, 1.6.0, 1.4.0
>
>
> The {{duplicate()}} method of the {{KryoSerializer}} is as following:
> {code:java}
> public KryoSerializer<T> duplicate() {
> return new KryoSerializer<>(this);
> }
> protected KryoSerializer(KryoSerializer<T> toCopy) {
> defaultSerializers = toCopy.defaultSerializers;
> defaultSerializerClasses = toCopy.defaultSerializerClasses;
> kryoRegistrations = toCopy.kryoRegistrations;
> ...
> }
> {code}
> Shortly put, when duplicating a {{KryoSerializer}}, the
> {{defaultSerializers}} serializer instances are directly provided to the new
> {{KryoSerializer}} instance.
> This causes the fact that those default serializers are shared across two
> different {{KryoSerializer}} instances, and therefore not a correct duplicate.
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