SERVER-19507 allow DISTINCT_SCAN over trailing field of an index

Closes #1101

Signed-off-by: David Storch <david.storch@10gen.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/jstests/core/explain_distinct.js b/jstests/core/explain_distinct.js
index 57e5f55e065..f2908caa5e7 100644
--- a/jstests/core/explain_distinct.js
+++ b/jstests/core/explain_distinct.js
@@ -80,7 +80,8 @@
     assert.eq([1], coll.distinct('b', {a: 1}));
     var explain = runDistinctExplain(coll, 'b', {a: 1});
     assert.commandWorked(explain);
-    assert.eq(10, explain.executionStats.nReturned);
-    assert(planHasStage(explain.queryPlanner.winningPlan, "FETCH"));
-    assert(isIxscan(explain.queryPlanner.winningPlan));
+    assert.eq(1, explain.executionStats.nReturned);
+    assert(!planHasStage(explain.queryPlanner.winningPlan, "FETCH"));
+    assert(planHasStage(explain.queryPlanner.winningPlan, "PROJECTION"));
+    assert(planHasStage(explain.queryPlanner.winningPlan, "DISTINCT_SCAN"));
 })();