Non Blocking - Metainfo Will Not Change Union Tool

[adrilarotta]

Hi guys, 

Anyone can explain what the option Non Blocking - Metainfo Will Not Change does, I read the explanation in the mastery tool but it is not totally clear.

"to pass data rows downstream without waiting for all inputs to send data. Do not use this mode if the upstream metainfo will change between configuration time and runtime."

Thanks in advance

[JagdeeshN]

@adrilarotta 

Can you please elaborate on where you found the 'Non Blocking - Metainfo Will Not Change'  configuration within the desktop interface?

Best,

Jagdeesh Narayanan

[Shrestha]

Hello Jagdeeshn,

It is an option given inside union tool when we try manual configuration.

I am also not getting any result difference, with or without selecting this option.

below link does have some info around this but seems insufficient to me:

https://help.alteryx.com/current/designer/union-tool#:~:text=Select%20Non%20Blocking%20-%20Metainfo%....

can you help to identify usage of this option with a live example.

kind regards

Shrestha

[sparksun]

I have the same confusion about the option,anyone could make it clear?

[Haimanta_007]

It allows data rows to be passed immediately to downstream without waiting for all inputs to send data. It improves the efficiency of the workflows. This should not be used if the upstream meta info will change between config time and runtime.