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  1. Giraph
  2. GIRAPH-967

GIRAPH-931 (Strongly Connected Components) bug fix

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.2.0
    • Component/s: examples
    • Labels:
      None

      Description

      GIRAPH-931, which provides an implementation of strongly connected components (SCC), uses the non-commutative BooleanOverwriteAggregator. This causes a race condition between workers, leading to incorrect results when increasing the number of workers. For example, the amazon0505 graph from SNAP will give different (incorrect) results with 8 workers compared to 1.

      The fix uses BooleanOrAggregator instead of BooleanOverwriteAggregator.

        Attachments

        1. GIRAPH-967.patch
          1 kB
          Young Han

          Activity

            People

            • Assignee:
              Unassigned
              Reporter:
              mhan Young Han
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              Dates

              • Created:
                Updated:
                Resolved: