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From "Gabriel Reid (JIRA)" <>
Subject [jira] [Created] (CRUNCH-23) PCollection#sort doesn't do a full sort on values
Date Sat, 21 Jul 2012 11:39:33 GMT
Gabriel Reid created CRUNCH-23:

             Summary: PCollection#sort doesn't do a full sort on values
                 Key: CRUNCH-23
             Project: Crunch
          Issue Type: Bug
            Reporter: Gabriel Reid

When a PCollection is sorted (using PCollection#sort), the sorting that is performed is only
per reducer, and not an absolute sort over all values. This means that the values are not
in sorted order if they are iterated over on a materialized collection. It also means that
the sorted files that are output from a sort operation can not be simply concatenated to come
to a single sorted file.

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