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https://issues.apache.org/jira/browse/IGNITE-1619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14950165#comment-14950165
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Pavel  Tupitsyn commented on IGNITE-1619:
-----------------------------------------

There is another problem with this ticket: adding TypeId that is not supported 
in Java can break Compute API and other things if user decides to use one of 
these onsupported types as a Job argument, for example. Java part won't be able 
to pass it around.

Let's stop this ticket until we have an ability to pass around unsopported 
types in Java.

> Platform .Net: Generic type is lost during array/collection serialization
> -------------------------------------------------------------------------
>
>                 Key: IGNITE-1619
>                 URL: https://issues.apache.org/jira/browse/IGNITE-1619
>             Project: Ignite
>          Issue Type: Bug
>          Components: interop
>    Affects Versions: ignite-1.4
>            Reporter: Pavel  Tupitsyn
>            Assignee: Pavel  Tupitsyn
>             Fix For: 1.5
>
>
> We do not serialize collection/array element type, so on deserialization we 
> can not recreate original collection. So generic arrays/collections can't be 
> used in job arguments, service arguments, etc.
> * We should keep current format for non-generic collections, arrays of 
> primitives, and arrays of objects
> * Generic collections and arrays should be written with new TypeIds (not 
> compatible with other platforms) and include type information



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