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From "Ilnar Taichinov (JIRA)" <>
Subject [jira] [Created] (BEAM-2819) Key only reads from Google Datastore
Date Tue, 29 Aug 2017 05:22:00 GMT
Ilnar Taichinov created BEAM-2819:

             Summary: Key only reads from Google Datastore
                 Key: BEAM-2819
             Project: Beam
          Issue Type: Wish
          Components: sdk-java-gcp
            Reporter: Ilnar Taichinov
            Assignee: Chamikara Jayalath

Currently there is no functionality allowing to read only keys from the Google Datastore through
the Datastore IO. In some cases users don't need to read the whole entity, e.g. to filter
by certain values in ancestry. This seems to be an important feature as the entity reads are
expensive and thus the native Datastore client/API allow to run Key Only queries. 

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