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From Sameer W <sam...@axiomine.com>
Subject Connected Streams - Controlling Order of arrival on the two streams
Date Tue, 09 Aug 2016 23:31:47 GMT
Hi,

I am using connected streams to send rules coded as JavaScript functions on
one stream and event data on another stream. They are both keyed by the
device id. The rules are cached in the co-map operation until another rule
arrives to override existing rule.

Is there a way to ensure that the rules stream arrives before the event
data stream. I am assuming there is no guarantee for this and I cache the
event data is the rules have not yet arrived and process and clear the
cache when the rules arrive. The rules are expected to arrive before the
event data. I am only using this method as a precautionary measure in case
the rules arrive late for reasons unrelated to when they were sent.

Is there a way to handle this situation without caching the streams?


Thanks,
Sameer

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