Mapstatedescriptor

[Szymon Szczypiński]

Hi, i have a question about MapStateDescriptor used to create MapState.
I have a keyed stream and ProcessWindowFunction where I want to use MapState. And the question is that in MapStateDescriptor constructor

public MapStateDescriptor(String name, Class<UK> keyClass, Class<UV> valueClass)

the "name" must be unique for each key or this is only the name/description.

Best Regards
Szymon

[Dominik Wosiński]

Hey,

It's the name for the whole descriptor. Not the keys, it means that no other descriptor should be created with the same name.

Best Regards,

Dom.

Sob., 13.10.2018, 09:50 użytkownik Szymon <[hidden email]> napisał:

Hi, i have a question about MapStateDescriptor used to create MapState.
I have a keyed stream and ProcessWindowFunction where I want to use MapState. And the question is that in MapStateDescriptor constructor

public MapStateDescriptor(String name, Class<UK> keyClass, Class<UV> valueClass)

the "name" must be unique for each key or this is only the name/description.

Best Regards
Szymon

[Kostas Kloudas]

Hi Szymon,

Dominik is right. The “name” refers to the whole state described by the specified descriptor.

Kostas

On Oct 13, 2018, at 10:30 AM, Dominik Wosiński <[hidden email]> wrote:

Hey,

It's the name for the whole descriptor. Not the keys, it means that no other descriptor should be created with the same name.

Best Regards,

Dom.

Sob., 13.10.2018, 09:50 użytkownik Szymon <[hidden email]> napisał:

Hi, i have a question about MapStateDescriptor used to create MapState.
I have a keyed stream and ProcessWindowFunction where I want to use MapState. And the question is that in MapStateDescriptor constructor

public MapStateDescriptor(String name, Class<UK> keyClass, Class<UV> valueClass)

the "name" must be unique for each key or this is only the name/description.

Best Regards
Szymon