Scott Wegner created BEAM-6261:
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             Summary: Dataflow runner does not refresh updated side inputs
                 Key: BEAM-6261
                 URL: https://issues.apache.org/jira/browse/BEAM-6261
             Project: Beam
          Issue Type: New Feature
          Components: runner-dataflow
            Reporter: Scott Wegner
            Assignee: Daniel Mills


See [this user@ 
thread|https://lists.apache.org/thread.html/5eed0fc3beeb9f1c1fe4a623cbcad41cb15d0d80490cafb1f27e4577@%3Cuser.beam.apache.org%3E].

The [Slowly-changing lookup 
cache|https://cloud.google.com/blog/products/gcp/guide-to-common-cloud-dataflow-use-case-patterns-part-1]
 pattern described on the GCP blog uses a side input to feed lookup data to 
join with the main data input. However, the Dataflow runner doesn't update side 
inputs.

Example pipeline here: https://github.com/lbordwell/sideinput



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