The behaviour of ordered bulk operations has changed since 3.2.0-rc0.
Previously, if an ordered bulk operation failed then it stopped there, but it now inserts more.
Given the following test case more inserts are being inserted than in previous versions:
db.test.drop();
db.test.insert({_id: 50}); // Create a document to force a duplicate key exception.
var bulk = db.test.initializeOrderedBulkOp();
for (i = 1; i < 100; i++) {
bulk.insert( { _id: i } );
}
try {
bulk.execute();
assert(false, "should have failed due to duplicate key");
} catch(err) {
assert(db.test.count() == 50, "Unexpected number inserted by bulk write");
}