title: Datastore Batch Query Size
body: <p>I'm trying to understand the behavior of the <a href="https://github.com/googleapis/google-cloud-java" rel="nofollow noreferrer">Google Cloud Java Library</a> to make batch queries against Datastore (datastore on the old backend, not Firestore in 'Datastore Mode').  It seems I'm unable to configure the total number of results that are returned from 'runBatchQuery', I'm looking for confirmation that this Github answer is the definitive answer for the how batch queries work in Datastore:</p>
  
  <p><a href="https://github.com/googleapis/google-cloud-ruby/issues/1319" rel="nofollow noreferrer">https://github.com/googleapis/google-cloud-ruby/issues/1319</a></p>
  
  <p>Basically, does the end user have no control of the batch size using the Datastore Java library to run queries?</p>