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  1. Infinispan
  2. ISPN-1275

ConsistentHash implementation producing same hash id for two different cluster nodes

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Details

    • Bug
    • Resolution: Obsolete
    • Blocker
    • 6.0.0.CR1
    • 5.0.0.FINAL
    • Core

    Description

      While working on ISPN-1273, I've discovered that when virtual nodes are enabled, ConsistentHash.getHashIds(address) can return the same hash for two different cluster nodes. Example: with 500 virtual nodes, both NodeA-23181 and NodeB-39177 produce hash id 5289. See attached log.

      Virtual nodes make the problem more apparent, however the problem exists regardless of vnodes being used.

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          is related to

          Bug - A problem that impairs or prevents the functions of the product. ISPN-1281 Default consistent hash should use a much larger hash space

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

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              manik_jira Manik Surtani (Inactive)
              rh-ee-galder Galder Zamarreño
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                Updated:
                Resolved: