SERVER-371 mix skip types to scan fewer unused keys

mongodb · Jul 8, 2010 · a84e4a1 · a84e4a1
1 parent ce24481
commit a84e4a1
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/db/btreecursor.cpp b/db/btreecursor.cpp
@@ -158,6 +158,9 @@ namespace mongo {
                 break;
             bucket = b->advance(bucket, keyOfs, direction, "skipUnusedKeys");
             u++;
+            if ( u % 10 == 0 ) {
+                skipOutOfRangeKeysAndCheckEnd();
+            }
         }
         if ( u > 10 )
             OCCASIONALLY log() << "btree unused skipped:" << u << '\n';