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From "Robinson, Landon - Landon" <>
Subject Best Practice for Materialization
Date Wed, 24 Feb 2016 20:04:52 GMT
Crunch Gurus,

Say I have a small data set of key/value pairs I’m reading into a Pcollection. I want to
give that small set as a supplementary data set to DoFns for comparisons.
I’ve done this before with hardcoded String arrays and such, but wanted to know what best
practice is for taking the contents of a very small Pcollection, and handing it as an object
to a DoFn.

I know I can turn it into a Hashmap and pass it as an argument/param, but is there a recommended
way in Crunch? Thanks!
Landon Robinson
Big Data & Hadoop Engineer
IT Business Intelligence, Lowe’s Companies Inc.

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