Jason Huynh created GEODE-1737:
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             Summary: gfsh query on region that does not exist may cause NPE
                 Key: GEODE-1737
                 URL: https://issues.apache.org/jira/browse/GEODE-1737
             Project: Geode
          Issue Type: Bug
            Reporter: Jason Huynh


The lines in DataCommand need to be wrapped with a check for newMember != null.

Approximately line 1320:
newMembers.retainAll(members);
members = newMembers;

There is a chance that newMembers is null because the region in the query does 
not exist on any member



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