Uploaded image for project: 'Cassandra'
  1. Cassandra
  2. CASSANDRA-14723

Increase write availability during range movements

    XMLWordPrintableJSON

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Normal
    • Resolution: Unresolved
    • Fix Version/s: 4.x
    • Component/s: Legacy/Coordination
    • Labels:
      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.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                benedict Benedict Elliott Smith
              • Votes:
                0 Vote for this issue
                Watchers:
                7 Start watching this issue

                Dates

                • Created:
                  Updated: