ERROR 1066: Unable to open iterator for alias - Pig

Question

Just started Pig; trying to load the data from a file and dump it henceforth. Loading seems to be proper, no error is thrown. Below is the query:

NYSE

Answer 1

You can place breakpoint to class PigServer to method store().

for(JobStats js : stats.getJobGraph()){
  if(js.getException() != null) {
    ex = js.getException();
  }
}

Inside the js object there is field errorMessage and it may contain description of the problem