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[raul.kripalani]: The naming is confusing. We are actually not transmitting classloaders. In fact, we cannot do so. What we'd like to do is transmit deserialisation "hints", that are used in whatever form the marshaller deems appropriate. So if anything, I would call this class a DeserialisationHintsCodec with methods: generateHints and computeClassLoaderFromHints.

[dmitriy setrakyan]: I am not sure I see the reason for removing the word classLoader on serialization part and keeping it on deserialization. I also think that the method names should be symmetric. With that in mind, "encodeClassLoader" and "decodeClassLoader" may not be the best names, but they are consistent with each other and symmetric. My vote would be to keep the naming.

ClassLoaderCodec

The ClassLoaderCodec should be called for every Object during serialization and deserialization and should be part of the IgniteConfiguraiton:

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[raul.kripalani]: I don't like transmitting bundle symbolic names over the wire, as it couples the serialising party with the deserialising party, forcing both to contain the class inside the same bundle. As I said in the mailing list, making this assumption would be a short-sighted strategy, as users may be sharing caches across applications across multiple containers, where classes live in different bundles in different containers.

I also don't think it's necessary. We just need the package name + package version. An OSGi container cannot expose the same package under the same version number twice, so the tuple (package name, package version) is enough to unambiguously locate the Bundle that exports our class.

Now, what we need to do is determine HOW we locate the Bundle. I have two ideas in mind:

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