add comment and test for query optimizer failed yield of a cached plan with retry

1 files changed, 27 insertions, 0 deletions

diff --git a/jstests/queryoptimizer5.js b/jstests/queryoptimizer5.js
new file mode 100644
index 00000000000..62875d65dec
--- /dev/null
+++ b/jstests/queryoptimizer5.js
@@ -0,0 +1,27 @@
+// Don't crash attempting to retry additional query plans if a recorded plan failed because a cursor was dropped.
+
+t = db.jstests_queryoptimizer5;
+t.drop();
+
+function reset() {
+    t.drop();
+    for( var i = 0; i < 5000; ++i ) {
+        t.save({a:i,b:i});
+    }
+    t.ensureIndex({a:1});
+    t.ensureIndex({b:1});
+}
+
+s = startParallelShell( "for( i = 0; i < 30; ++i ) { sleep( 200 ); db.jstests_queryoptimizer5.drop(); }" );
+
+for( var i = 0; i < 10; ++i ) {
+    try {
+        reset();
+        t.find( {$or:[{a:{$gte:0},b:{$gte:0}}]} ).batchSize( 10000 ).itcount();
+        t.find( {$or:[{a:{$gte:0},b:{$gte:0}}]} ).batchSize( 10000 ).itcount();
+    } catch (e) {
+//        printjson(e);
+    }
+}
+
+s();