Xushaohong commented on code in PR #647:
URL: https://github.com/apache/ratis/pull/647#discussion_r893083663
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ratis-server-api/src/main/java/org/apache/ratis/statemachine/StateMachine.java:
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@@ -189,6 +189,12 @@ default void notifyGroupRemove() {}
* @param failedEntry The failed log entry, if there is any.
*/
default void notifyLogFailed(Throwable cause, LogEntryProto failedEntry) {}
+
+ /**
+ * Notify the {@link StateMachine} that the progress of install snapshot is
+ * completely done. Could trigger the cleanup of snapshots.
+ */
+ default void
notifyInstallSnapshotFinished(RaftProtos.InstallSnapshotResult result) {}
Review Comment:
> @Xushaohong , Since the new method is for the state machine to clean up,
it is useful to pass also the snapshot index; see
https://issues.apache.org/jira/secure/attachment/13044817/647_review.patch
(apply on top of the change)
Only one place modified, where the initial value should be consistent as -1
`private final AtomicLong installedIndex = new
AtomicLong(INVALID_LOG_INDEX);`
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