Join bolt that auto-magically joins declared output fields ?

[Itai Frenkel <It...@forter.com>]

Is it possible to write a join bolt that joins tuples from two different bolts, and automatically exposes the correct output fields ?


For example:

A--(x)-->Join--(x,y)

B--(y)----^


Given bolt A that declares ("x") as an output field, and bolt B that declares ("y") as an output field, how would I code a reusable Join bolt that auto-magically returns ("x","y") as the output field.


thanks,

Itai

RE: Join bolt that auto-magically joins declared output fields ?

["Brunner, Bill" <bi...@baml.com>]

Trident can do it natively using .merge or .join, depending on your use case.

From: Itai Frenkel [mailto:Itai@forter.com]
Sent: Thursday, January 08, 2015 9:14 AM
To: user@storm.apache.org
Subject: Join bolt that auto-magically joins declared output fields ?


Is it possible to write a join bolt that joins tuples from two different bolts, and automatically exposes the correct output fields ?



For example:

A--(x)-->Join--(x,y)

B--(y)----^



Given bolt A that declares ("x") as an output field, and bolt B that declares ("y") as an output field, how would I code a reusable Join bolt that auto-magically returns ("x","y") as the output field.



thanks,

Itai




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