JacksonYao287 commented on code in PR #2953:
URL: https://github.com/apache/ozone/pull/2953#discussion_r845706087
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hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/ratis/OzoneManagerStateMachine.java:
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@@ -470,8 +469,12 @@ public void close() throws IOException {
// OM should be shutdown as the StateMachine has shutdown.
LOG.info("StateMachine has shutdown. Shutdown OzoneManager if not " +
"already shutdown.");
- ozoneManager.shutdown(new RaftException("RaftServer called shutdown on " +
- "StateMachine"));
+ super.close();
+ if (!ozoneManager.isStopped()) {
+ ozoneManager.stop();
+ }
+ ExitUtils.terminate(1, "OM state machine is shutdown by Ratis server",
+ null, false, LOG);
Review Comment:
@hanishakoneru thanks very much for the review and sorry for the late reply!
in our production environment, we found that in some case statemachine is
closed by ratis, but the base process(scm/om) is still running. i don`t think
this is a good state and sometimes confusing. so i create this patch to make
sure if statemachine is closed , the base process will be terminated.
>OzoneManager should have two methods - stop() and shutdown(). Stop() would
just stop the services which is needed for tests. Shutdown can call stop() and
then terminate the process.
Critical failures, like the one here is when StateMachine is closed, would
then call OzoneManager#shutdown to terminate the process.
i totally agree with this, it seems graceful and clear.
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