1 files changed, 61 insertions, 0 deletions
diff --git a/jstests/replsets/replset8.js b/jstests/replsets/replset8.js
new file mode 100644
index 00000000000..cc900195cde
--- /dev/null
+++ b/jstests/replsets/replset8.js
@@ -0,0 +1,61 @@
+
+// test for SERVER-6303 - if documents move backward during an initial sync.
+
+var rt = new ReplSetTest( { name : "replset8tests" , nodes: 1 } );
+
+var nodes = rt.startSet();
+rt.initiate();
+var master = rt.getMaster();
+var bigstring = "a";
+var md = master.getDB( 'd' );
+var mdc = md[ 'c' ];
+
+// prep the data
+
+// idea: create x documents of increasing size, then create x documents of size n.
+//       delete first x documents.  start initial sync (cloner).  update all remaining 
+//       documents to be increasing size.
+//       this should result in the updates moving the docs backwards.
+
+var doccount = 10000;
+// Avoid empty extent issues
+mdc.insert( { _id:-1, x:"dummy" } );
+
+print ("inserting bigstrings");
+for( i = 0; i < doccount; ++i ) {
+    mdc.insert( { _id:i, x:bigstring } );
+    bigstring += "a";
+}
+md.getLastError();
+
+print ("inserting x");
+for( i = doccount; i < doccount*2; ++i ) {
+    mdc.insert( { _id:i, x:i } );
+}
+md.getLastError();
+
+print ("deleting bigstrings");
+for( i = 0; i < doccount; ++i ) {
+    mdc.remove( { _id:i } );
+}
+md.getLastError();
+
+// add a secondary
+var slave = rt.add();
+rt.reInitiate();
+print ("initiation complete!");
+var sc = slave.getDB( 'd' )[ 'c' ];
+slave.setSlaveOk();
+sleep(25000);
+print ("updating documents backwards");
+// Move all documents to the beginning by growing them to sizes that should
+// fit the holes we made in phase 1
+for (i = doccount*2; i > doccount; --i) {
+    mdc.update( { _id:i, x:i }, { _id:i, x:bigstring } );
+    md.getLastError();
+    bigstring = bigstring.slice(0, -1); // remove last char
+}
+print ("finished");
+// Wait for replication to catch up.
+rt.awaitSecondaryNodes();
+assert.eq(doccount+1, slave.getDB( 'd' )['c'].count());