Alessio Arleo created GIRAPH-1000:
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Summary: Multi Output support
Key: GIRAPH-1000
URL: https://issues.apache.org/jira/browse/GIRAPH-1000
Project: Giraph
Issue Type: Improvement
Components: bsp, conf and scripts, graph
Affects Versions: 1.0.0, 1.1.0, 1.2.0-SNAPSHOT
Reporter: Alessio Arleo
Hadoop natively supports multiple outputs. The objective is to extend Giraph to
support multiple output formats during a single giraph run.
According to the official Hadoop apidocs*, to take advantage of multiple
outputs the the pattern is the following:
- Modify the job submission
- Modify the reducer class to write on the declared different outputs
Since Giraph jobs are executed as mappers, probably this approach (or at least
its second part) is not feasible, so further investigation is necessary.
*https://hadoop.apache.org/docs/r1.2.1/api/org/apache/hadoop/mapreduce/lib/output/MultipleOutputs.html
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