[RATIS-2038] IllegalStateException when ServerState is closed before start

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.1.0
• Component/s: server
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 01/Mar/24 16:38
• Updated: 01/Mar/24 18:52
• Resolved: 01/Mar/24 18:52

Description

When ServerState is closed before start, it will have the following exception. This is minor since it happens when "close before start".

IllegalStateException: 5b481d07-b77a-41d2-9738-f92fabc9c16c@group-C6CBCD530F38: stateMachineUpdater is uninitialized.
 	at org.apache.ratis.server.impl.ServerState.getStateMachineUpdater(ServerState.java:294)
 	at org.apache.ratis.server.impl.ServerState.getLastAppliedIndex(ServerState.java:483)
 	at org.apache.ratis.server.impl.ServerState.close(ServerState.java:424)
 	at org.apache.ratis.server.impl.RaftServerImpl.lambda$close$1(RaftServerImpl.java:521)
 	at org.apache.ratis.util.LifeCycle.lambda$checkStateAndClose$7(LifeCycle.java:306)
 	at org.apache.ratis.util.LifeCycle.checkStateAndClose(LifeCycle.java:326)
 	at org.apache.ratis.util.LifeCycle.checkStateAndClose(LifeCycle.java:304)
 	at org.apache.ratis.server.impl.RaftServerImpl.close(RaftServerImpl.java:498)
 	at org.apache.ratis.server.impl.RaftServerProxy$ImplMap.close(RaftServerProxy.java:137)
 	at org.apache.ratis.server.impl.RaftServerProxy$ImplMap.lambda$close$0(RaftServerProxy.java:124)
 	at org.apache.ratis.util.ConcurrentUtils.accept(ConcurrentUtils.java:203)
 	at org.apache.ratis.util.ConcurrentUtils.lambda$null$4(ConcurrentUtils.java:182)
 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
 	at java.base/java.lang.Thread.run(Thread.java:834)

Issue Links

• links to: GitHub Pull Request #1048