In my understanding such objects are completely fine.

Even typeId is not necessary, since we have
GridBinaryMarshaller.UNREGISTERED_TYPE_ID mode,
where full type name is included in binary object header.

My testing shows that Ignite works fine with such objects (including SQL).

Pavel

On Mon, Sep 4, 2017 at 10:40 AM, Vladimir Ozerov <voze...@gridgain.com>
wrote:

> Igniters,
>
> As you probably know, we are working on a new protocol for thin client. It
> would allow users to create integrations with other languages and platforms
> (e.g. Go, R, etc). This protocol should be simple enough, otherwise no-one
> would ever implement anything on top of it.
>
> There is a problem with binary object metadata. Currently when we serialize
> objects we check if any new metadata is available, and if yes - we push it
> to the cluster before serialization is finished. This way we always have
> metadata for all objects in the cluster. Metadata allow us to implement
> certain features - introspection (usability) and performance (so called
> "compact footer" optimization). Bad thing is that metadata management would
> make client implementation much more complex.
>
> I feel that in some cases clients might decide not to implement metadata
> management for the sake of simplicity. Technically this is very easy - just
> disable "compactFooter" optimization and write field IDs during
> serialization. But I remember that there were some ideas to deprecate
> "compactFooter=false" at all.
>
> My question is: are fine with idea that objects without metadata will be
> normal case in Ignite?
>
> Vladimir.
>

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