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Posted to issues@ratis.apache.org by GitBox <gi...@apache.org> on 2022/12/08 19:55:55 UTC

[GitHub] [ratis] szetszwo commented on pull request #797: RATIS-1758. Add linearizable read in Counter example

szetszwo commented on PR #797:
URL: https://github.com/apache/ratis/pull/797#issuecomment-1343277835

   @SzyWilliam , I got some idea to use the Counter example to test Linearizable Read:
   - Add a configurable SIMULATED_SLOWNESS to the `CounterStateMachine` -- add a sleep time such that it will sleep in each `applyTransaction(..)` call.
   - Setup a 3-node (n0, n1, n2) cluster as following
     - Set n0 to have a higher priority, so it will always be the leader.
     - Set n1 to be slow -- set SIMULATED_SLOWNESS to 1 second or higher.
   - After the cluster started
     - run a client to update the leader 10 times.
     - after that, read from the n1 to see if it will wait (~10s) and get the latest value.


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