[jira] [Created] (FLINK-3634) Fix documentation for DataSetUtils.zipWithUniqueId()

[Shang Yuanchun (Jira)]

Greg Hogan created FLINK-3634:
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             Summary: Fix documentation for DataSetUtils.zipWithUniqueId()
                 Key: FLINK-3634
                 URL: https://issues.apache.org/jira/browse/FLINK-3634
             Project: Flink
          Issue Type: Improvement
          Components: Documentation
    Affects Versions: 1.1.0
            Reporter: Greg Hogan
            Assignee: Greg Hogan
            Priority: Minor
             Fix For: 1.1.0, 1.0.1


Under FLINK-2590 the assignment and testing of unique IDs was improved but the documentation looks to still reference the old implementation.

With {{parallelism=1}} there is no difference between zipWithUniqueID and zipWithIndex. With greater parallelism the results of zipWithUniqueID are dependent on the partitioning.

The documentation should demonstrate a possible result that is different from the incremental sequence of zipWithIndex while noting that results are dependent on the parallelism and partitioning.



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