lewismc commented on a change in pull request #156: GORA 411 - Add exists(key) 
to DataStore interface
URL: https://github.com/apache/gora/pull/156#discussion_r270284126
 
 

 ##########
 File path: 
gora-accumulo/src/main/java/org/apache/gora/accumulo/store/AccumuloStore.java
 ##########
 @@ -642,6 +642,20 @@ private void setFetchColumns(Scanner scanner, String[] 
fields) {
       }
     }
   }
+       
+       @Override
+  public boolean exists(K key) throws GoraException {
+    try {
+      // TODO make isolated scanner optional?
 
 Review comment:
   Are you suggesting to drive this from configuration or via the API?

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