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From Phill Tomlinson <>
Subject Execute a Task Periodically rather than through a stream of events
Date Fri, 27 Mar 2015 10:02:31 GMT

I was wondering if it I was possible to execute a Samza task/stream on a periodic timer, rather
than ingesting from a specific data source?

My use case is if there is a stream that deals with certain events these events can store
some state in a tasks local database. These events that go into this database will be stored
and may need to be awoken on a given timer thus need to be polled and queried on? Currently
I can only envisage doing this with an external database and using a an app to poll the database
and feed into another stream but as a samza has the concept of local datastore this would
greatly reduce latency and increase throughput if it could reawaken its own events.


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