Daniel Halperin created BEAM-639:

             Summary: BigtableIO.Read: expose withStartKey/withEndKey
                 Key: BEAM-639
                 URL: https://issues.apache.org/jira/browse/BEAM-639
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-gcp
            Reporter: Daniel Halperin
            Assignee: Daniel Halperin
            Priority: Minor

BigtableIO.Read takes a table and a filter, but does not let the user customize 
the row range. If a user wants to scan a relatively narrow range, they can do 
it by specifying a filter ("starts with abcd") or ("less than abcd"), but under 
the hood Cloud Bigtable will implement this as a full table scan -> filter 
instead of a narrower scan.

We should expose these setters publicly so that users can implement row scans 

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