Hi, for below sample code.  storage backend is Hbase,  "name" is used as  index, it will at least has two rows update: but what if index update succeed while vertex update failed(throw exception). when we call rollback, Will it roll back the index write to storage? 

try {

    user = graph.addVertex()

    user.property("name", name)

    graph.tx().commit()

} catch (Exception e) {

    //Recover, retry,  or return error message

    println(e.getMessage())

    graph.tx().rollback()   // <------- Added line 

}