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From Mikhail Cherkasov <mcherka...@gridgain.com>
Subject Re: Ignite stops working suddenly during dev
Date Thu, 13 Jun 2019 17:48:01 GMT
*"ERROR: Type 'Person' has a different/incorrect type
for field 'salary'. Expected 'double' but 'string' was provided. Field
type's modification is unsupported, clean {root_path}/marshaller directory
if the type change is required."*

it still sounds like a hack and it's not clear if it should be done on all
nodes or only on the node with error, should it be done for client nodes
too or only for server nodes?
Also, can it be done on a live cluster, or we need to stop or/and
deactivate it first?

Thanks,
Mike.

On Wed, Jun 12, 2019 at 11:34 AM Garrett Alley <garrett.alley@gridgain.com>
wrote:

> Denis,
>
> Minor changes to your suggestion:
>
> *"ERROR: Type 'Person' has a different/incorrect type
> for field 'salary'. Expected 'double' but 'string' was provided. Field
> type's modification is unsupported, clean {root_path}/marshaller directory
> if the type change is required."*
>
>
> ===
>
> Garrett Alley
> Documentation
> GridGain Systems
>
>
> On Wed, Jun 12, 2019 at 11:15 AM Denis Magda <dmagda@apache.org> wrote:
>
> > Alex, Garrett,
> >
> > How about this error message?
> >
> > That's what we have know: *ERROR: Binary type has different field types
> > [typeName=Person, fieldName=salary, fieldTypeName1=double,
> > fieldTypeName2=String]*
> >
> > That's how I would change it: *"Type 'Person' has different/incorrect
> type
> > for field 'salary'. Expected 'double' but 'string' was provided. Field
> > type's modification is unsupported, clean {root_path}/marshaller
> directory
> > if the type change is required"*
> >
> > -
> > Denis
> >
> >
> > On Thu, Jun 6, 2019 at 5:24 AM Alexey Goncharuk <
> > alexey.goncharuk@gmail.com>
> > wrote:
> >
> > > Hello Denis,
> > >
> > > As for p.1 - fully agree. For p.2 - I have some ideas to be implemented
> > in
> > > the future in Ignite 3.0, will share some ideas later.
> > >
> > > чт, 6 июн. 2019 г. в 13:29, Denis Magda <dmagda@apache.org>:
> > >
> > > > Hey Igniters,
> > > >
> > > > I'd like us to brainstorm how to solve the following usability issue.
> > > >
> > > > A user starts developing an app and can change the data model via a
> > > > configuration or DDL frequently. However, if there is an incompatible
> > > data
> > > > model change like a type/field modification Ignite will fail to
> restart
> > > or
> > > > begins throwing "wrong data type" exceptions.
> > > >
> > > > A solution for these scenarios is to clean the "marshaller/" folder.
> > > Guess
> > > > who knows this trick? A few of us. Had to do this all the time while
> > > baking
> > > > a demo for one of the recent shows and here is a good example of
> users'
> > > > hardships:
> > > >
> > > >
> > >
> >
> https://stackoverflow.com/questions/56384773/apache-ignite-programmatically-destroy-persistent-cache
> > > >
> > > > How do you see this needs to be addressed considering:
> > > >
> > > >    1. Current Ignite serialization format - a special message that
> > > explains
> > > >    what to clean and where or some sort of automation?
> > > >    2. Future storage independent format - when binary serialization
> > logic
> > > >    will be revisited. @Alex Goncharuk, please step in.
> > > >
> > > >
> > > > -
> > > > Denis
> > > >
> > >
> >
>


-- 
Thanks,
Mikhail.

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