Paxos in Python, tested with Jepsen

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Miscellaneous python-paxos-jepsen
Overview

Python implementation of Multi-Paxos with a stable leader and reconfiguration, roughly following "Paxos Made Moderately Complex".

Run python3 paxos/start-servers.py paxos/example-config.json to start 3 servers. Each runs several Paxos "agents": leader, acceptor, and replica. Their shared state is just a list of ints, initially empty.

Use python3 paxos/client.py paxos/example-config.json 1 to append 1 (or a number of your choice) to the list of ints. My goal is to make this list linearizable, and test it with Jepsen.

Requires Python 3.10 or later. Set up with python3 -m pip install -r paxos/requirements.txt.

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Comments
  • About the phase 1a message?

    About the phase 1a message?

    https://github.com/ajdavis/python-paxos-jepsen/blob/3a4cfa7bb067c08fb559ad0d299b3986f05134cc/paxos/core.py#L160-L166

    Hi, Should the phase 1a message be sent just once(when not confilct) within proposer in the multi-decree parliament? The phase 1a message always is sent in this code when proposer have recieved client's request.

    image
    opened by vision9527 1
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Senior Staff Engineer at MongoDB, working on replication. No recruiters please!
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