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https://issues.apache.org/jira/browse/RATIS-1119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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runzhiwang updated RATIS-1119:
------------------------------
Target Version/s: 1.1.0 (was: 2.0.0)
> StateMachine is not closed when StateMachineUpdater encounters exception
> ------------------------------------------------------------------------
>
> Key: RATIS-1119
> URL: https://issues.apache.org/jira/browse/RATIS-1119
> Project: Ratis
> Issue Type: Bug
> Components: server
> Reporter: Hanisha Koneru
> Assignee: Tsz-wo Sze
> Priority: Critical
> Fix For: 1.1.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> When StateMachineUpdater encounters an exception while applying the log to
> StateMachine, it shuts down the RaftServerImpl.
> {code:java}
> #StateMachineUpdater
> public void run() {
> try {
> ...
> ...
> final MemoizedSupplier<List<CompletableFuture<Message>>> futures =
> applyLog();
> ...
> } catch (Throwable t) {
> ...
> server.shutdown(); # RaftServerImpl#shutdown()
> }{code}
> The RaftServerImpl#shutdown() in turn calls the
> StateMachineUpdater#stopAndJoin() which waits for the StateMachineUpdater
> thread to die. This creates a circular dependency on the StateMachineUpdater
> thread to exit. In the process, StateMachineUpdater#stop() is never called
> and hence StateMachine is never informed that the RaftServer is shutdown.
> {code:java}
> StateMachineUpdater#run() on exception -> RaftServerImpl#shutdown() ->
> ServerState#close() -> StateMachineUpdater#stopAndJoin() -> updates stopIndex
> and waits for updater thread to die.{code}
>
>
>
>
>
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