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  1. Cassandra
  2. CASSANDRA-14723

Increase write availability during range movements

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Details

    • Improvement
    • Status: Open
    • Normal
    • Resolution: Unresolved
    • 5.x
    • Legacy/Coordination
    • None

    Description

      If pending ranges were to be paired with their ‘natural’ replicas, instead of requiring QUORUM+#pending, we could instead require QUORUM, but count both owners of the pending range as a combined 1 - where they are only counted if both return success.

      As an example, in a cluster with RF=3, a pending range movement would currently require 3 nodes to respond, so must include at least one of the pending nodes.  Under the proposed scheme, the 2 non-participating nodes could respond as normal to reach a QUORUM, not requiring either of the pending nodes to respond.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. CASSANDRA-8346 Paxos operation can use stale data during multiple range movements

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              Unassigned Unassigned
              benedict Benedict Elliott Smith
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              Dates

                Created:
                Updated: