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Jepsen: Jetcd 0.8.2
1 Background Etcd is a coordination service designed to offer Strict Serializable reads, writes, and micro-transactions over a small, in-memory key-value store. In 2022, Jepsen re-tested etcd as a part of a private engagement covering an assortment of databases.
In July 2024, Jepsen performed an independent investigation to identify the cause of some of these issues, and traced them to a bug in jetcd, the official etcd client library for the Java programming language. Users of these versions may observe apparent instances of aborted read, circular information flow, lost update, and other anomalies when processes crash or the network loses messages. Jepsen wishes to thank C Scotta Andreas, Tim Kordas, Ben Linsay, Nathan Taylor, and James Turnbull for their review of early drafts.
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