amaliujia commented on a change in pull request #188:
URL: https://github.com/apache/incubator-ratis/pull/188#discussion_r488288695
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File path:
ratis-server/src/main/java/org/apache/ratis/server/impl/RaftServerImpl.java
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@@ -1171,6 +1177,26 @@ public InstallSnapshotReplyProto
installSnapshot(InstallSnapshotRequestProto req
return reply;
}
+ @Override
+ public PauseReplyProto pause(PauseRequestProto request) throws IOException {
+ assertLifeCycleState(LifeCycle.States.RUNNING);
+ // TODO: should pause() be limited on only working for a follower?
+ if (!lifeCycle.compareAndTransition(RUNNING, PAUSING)) {
+ return PauseReplyProto.newBuilder().setSuccess(false).build();
+ }
+
+ // Now the state of lifeCycle should be PAUSING, which will prevent future
other operations.
+ // Pause() should pause ongoing operations:
+ // a. call {@link StateMachine#pause()}.
+ synchronized (this) {
+ // TODO: any other operations that needs to be paused?
+ stateMachine.pause();
+ }
Review comment:
Make sense!
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