In Hadoop Map Reduce, the Configuration class can pass String parameters (via the Context argument to map and reduce). Likewise, the Map<String, String> options argument in Iterator init allows the same functionality for Accumulo iterators.
However, for more complex parameters, Hadoop has a DistributedCache which is available to all of the mappers and reducers. Is there any similar functionality for Accumulo iterators, or does all of the information need to be sent as a String through options?
Also, are there any problems with sending exceptionally long Strings in the options argument?
Keith Turner 2013-03-28, 16:03
Eric Newton 2013-03-28, 21:36