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From andralungu <...@git.apache.org>
Subject [GitHub] flink pull request: [FLINK-2150][gelly] Added library method for a...
Date Sun, 07 Jun 2015 13:39:24 GMT
GitHub user andralungu opened a pull request:


    [FLINK-2150][gelly] Added library method for assigning unique labels to vertices

    This PR adds a library method that assigns unique labels to vertices. 
    The following facts are used:
     * a map function generates an n-bit(n - number of parallel tasks) ID based on its own
     * with each record, a counter c is increased
     * the unique label is then produced by shifting the counter c by the n-bit mapper ID
    Thanks @fhueske for the useful tips!
    And thanks @rmetzger for the nice stackoverflow answer (http://stackoverflow.com/questions/30596556/zipwithindex-on-apache-flink)
    If you guys find some spare minutes, you are more than welcome to have a look at what
I did here. If not, we'll just let @vasia do what she does best :) 

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/andralungu/flink generateUniqueIds

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #801
commit d655187a9626be6aca734fdbe035de62e3ead839
Author: andralungu <lungu.andra@gmail.com>
Date:   2015-06-07T13:27:24Z

    [FLINK-2150][gelly] Added library method for assigning unique labels to vertcies


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