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Accumulo, mail # user - Distributed Cache - for iterators?


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Distributed Cache - for iterators?
Slater, David M. 2013-03-28, 15:45
Hey everyone,

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?

Thanks,
David