hachikuji commented on a change in pull request #9531: URL: https://github.com/apache/kafka/pull/9531#discussion_r519968145
########## File path: raft/src/main/java/org/apache/kafka/raft/QuorumState.java ########## @@ -21,18 +21,21 @@ import org.slf4j.Logger; import java.io.IOException; +import java.util.Collections; import java.util.HashSet; +import java.util.List; import java.util.Optional; import java.util.OptionalInt; import java.util.Random; import java.util.Set; import java.util.stream.Collectors; /** - * This class is responsible for managing the current state of this node and ensuring only - * valid state transitions. + * This class is responsible for managing the current state of this node and ensuring + * only valid state transitions. Below we define the possible state transitions and + * how they are triggered: * - * Unattached => + * Unattached|Resigned => Review comment: In the future, when we have reassignment, we will still have to protect every quorum change with a majority of the current nodes. The proposal we had previously only allowed single-node changes, which meant that any majority was a majority before and after the state was applied. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org