MapReduce Design Patterns by Donald Miner & Adam Shook
Author:Donald Miner & Adam Shook [Donald Miner and Adam Shook]
Language: eng
Format: epub, pdf
Tags: COMPUTERS / Data Modeling & Design
ISBN: 9781449341978
Publisher: O'Reilly Media
Published: 2012-11-25T16:00:00+00:00
Caution
Be considerate of follow on data parsing to ensure proper field delimiters. Outputting an empty text object is actually unwise. A record that contains the proper structure but with null fields should be generated instead of outputting an empty object. This will ensure proper parsing for follow-on analytics.
Combiner optimization
Because the join logic is performed on the reduce side, a combiner will not provide much optimization in this example.
Reduce Side Join with Bloom Filter
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| Coding Theory | Localization |
| Logic | Object-Oriented Design |
| Performance Optimization | Quality Control |
| Reengineering | Robohelp |
| Software Development | Software Reuse |
| Structured Design | Testing |
| Tools | UML |
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