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From Paris Carbone <par...@kth.se>
Subject Re: Consistency guarantees on multiple sinks
Date Thu, 05 Jan 2017 13:47:44 GMT
Hi Nancy,

Flinkā€™s vanilla rollback recovery mechanism restarts computation from a global checkpoint
thus sink duplicates (job output) can occur no matter how many sinks are declared;  the whole
computation in the failed execution graph will roll back.


> On 5 Jan 2017, at 14:24, Nancy Estrada <nancy.a.estrada@gmail.com> wrote:
> Hi,
> If in a Job there is more than one sink declared, what happens when a
> failure occurs? all the sink operations get aborted? (atomically as in a
> transactional environment), or the exactly-once-processing consistency
> guarantees are provided just when one sink is declared per job? Is it
> recommended to have more than one sink per job?
> Thank you!
> Nancy Estrada
> --
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