App Engine Python SDK  v1.6.9 rev.445
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google.appengine.ext.mapreduce.shuffler._HashPipeline Class Reference
Inheritance diagram for google.appengine.ext.mapreduce.shuffler._HashPipeline:
google.appengine.ext.mapreduce.pipeline_base.PipelineBase

Public Member Functions

def run
 
- Public Member Functions inherited from google.appengine.ext.mapreduce.pipeline_base.PipelineBase
def start
 

Detailed Description

A pipeline to read mapper output and hash by key.

Args:
  job_name: root mapreduce job name.
  filenames: filenames of mapper output. Should be of records format
    with serialized KeyValue proto.
  shards: Optional. Number of output shards to generate. Defaults
    to the number of input files.

Returns:
  The list of filenames. Each file is of records formad with serialized
  KeyValue proto. For each proto its output file is decided based on key
  hash. Thus all equal keys would end up in the same file.

The documentation for this class was generated from the following file: