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  1. Solr
  2. SOLR-14409

Existing violations allow bypassing policy rules when adding new replicas

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: master (9.0), 8.5, 8.6
    • Fix Version/s: 8.6
    • Component/s: AutoScaling
    • Labels:
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      Description

      Steps to reproduce:

      • start with an empty cluster policy.
      • create a collection with as many replicas as there are nodes.
      • add one more replica to any node. Now this node has two replicas, all other nodes have one. 
      • define the following cluster policy:
      { 'set-cluster-policy': [ {'replica': '<2', 'shard': '#ANY', 'node': '#ANY', 'strict': true} ] } 

      This automatically creates a violation because of the existing layout.

      • try adding one more replica. This should fail because no node satisfies the rules (there must be at most 1 replica per node). However, the command succeeds and adds replica to the node that already has 2 replicas, which clearly violates the policy and makes matters even worse.

       

        Attachments

        1. SOLR-14409.patch
          3 kB
          Andrzej Bialecki

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              • Assignee:
                noble.paul Noble Paul
                Reporter:
                ab Andrzej Bialecki
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