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https://issues.apache.org/jira/browse/AURORA-1950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16183246#comment-16183246
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Jordan Ly commented on AURORA-1950:
-----------------------------------
https://reviews.apache.org/r/62626/
> Exceptions in LogStorage.prepare() cause scheduler die and stay in DEAD state
> -----------------------------------------------------------------------------
>
> Key: AURORA-1950
> URL: https://issues.apache.org/jira/browse/AURORA-1950
> Project: Aurora
> Issue Type: Bug
> Components: Scheduler
> Reporter: Jordan Ly
> Assignee: Jordan Ly
> Attachments: prepare_failure.patch
>
>
> If the Scheduler fails while starting up its storage (calling
> storage.prepare() in PREPARING_STORAGE state in SchedulerLifecycle.java), the
> Scheduler will transition to dead but incorrectly shutdown. The non-daemon
> threads will fail to stop, leaving the scheduler in the DEAD state.
> The logs showing the issue:
> {noformat}
> I0926 01:02:34.118 [HttpServerLauncher STARTING, AbstractConnector] Started
> ServerConnector@6b15ba8c{HTTP/1.1,[http/1.1]}{0.0.0.0:8081}
> I0926 01:02:34.120 [HttpServerLauncher STARTING, Server] Started @7043ms
> I0926 01:02:34.122 [main, StateMachine] SchedulerLifecycle state machine
> transition IDLE -> PREPARING_STORAGE
> E0926 01:02:35.023 [main, SchedulerLifecycle] Caught unchecked exception:
> java.lang.IllegalStateException: Failed to open the log, cannot continue
> java.lang.IllegalStateException: Failed to open the log, cannot continue
> at
> org.apache.aurora.scheduler.storage.log.LogStorage.prepare(LogStorage.java:407)
> at
> org.apache.aurora.common.inject.TimedInterceptor.invoke(TimedInterceptor.java:83)
> at
> org.apache.aurora.scheduler.storage.CallOrderEnforcingStorage.prepare(CallOrderEnforcingStorage.java:86)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle$3.accept(SchedulerLifecycle.java:216)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle$3.accept(SchedulerLifecycle.java:213)
> at
> org.apache.aurora.common.base.Consumers.lambda$filter$1(Consumers.java:74)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle.lambda$dieOnError$1(SchedulerLifecycle.java:337)
> at
> org.apache.aurora.common.base.Consumers.lambda$filter$1(Consumers.java:74)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at
> org.apache.aurora.common.util.StateMachine.transition(StateMachine.java:160)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle.prepare(SchedulerLifecycle.java:354)
> at
> org.apache.aurora.scheduler.app.SchedulerMain.run(SchedulerMain.java:148)
> at
> org.apache.aurora.scheduler.app.SchedulerMain.flagConfiguredMain(SchedulerMain.java:219)
> at
> org.apache.aurora.scheduler.app.SchedulerMain.main(SchedulerMain.java:243)
> Caused by: java.io.IOException: blah blah blah
> at
> org.apache.aurora.scheduler.storage.log.LogStorage.prepare(LogStorage.java:404)
> ... 19 common frames omitted
> I0926 01:02:35.023 [main, StateMachine] SchedulerLifecycle state machine
> transition PREPARING_STORAGE -> DEAD
> I0926 01:02:35.028 [main, StateMachine] storage state machine transition
> CONSTRUCTED -> STOPPED
> I0926 01:02:35.028 [main, Lifecycle] Shutting down application
> I0926 01:02:35.028 [main, ShutdownRegistry$ShutdownRegistryImpl] Executing 4
> shutdown commands.
> I0926 01:02:35.047 [main, StateMachine] SchedulerLifecycle state machine
> transition DEAD -> DEAD
> I0926 01:02:35.047 [main, SchedulerLifecycle] Shutdown already invoked,
> ignoring extra call.
> I0926 01:02:35.053 [Curator-Framework-0, CuratorFrameworkImpl]
> backgroundOperationsLoop exiting
> I0926 01:02:35.066 [main-EventThread, ClientCnxn] EventThread shut down for
> session: 0x15ebba3b77c0010
> I0926 01:02:35.066 [main, ZooKeeper] Session: 0x15ebba3b77c0010 closed
> I0926 01:02:35.067 [main, SchedulerMain] Application run() exited.
> E0926 01:02:35.067 [main, SchedulerMain] Uncaught exception from
> Thread[main,5,main]:java.lang.IllegalStateException: Failed to open the log,
> cannot continue java.lang.IllegalStateException: Failed to open the log,
> cannot continue
> at
> org.apache.aurora.scheduler.storage.log.LogStorage.prepare(LogStorage.java:407)
> at
> org.apache.aurora.common.inject.TimedInterceptor.invoke(TimedInterceptor.java:83)
> at
> org.apache.aurora.scheduler.storage.CallOrderEnforcingStorage.prepare(CallOrderEnforcingStorage.java:86)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle$3.accept(SchedulerLifecycle.java:216)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle$3.accept(SchedulerLifecycle.java:213)
> at
> org.apache.aurora.common.base.Consumers.lambda$filter$1(Consumers.java:74)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle.lambda$dieOnError$1(SchedulerLifecycle.java:337)
> at
> org.apache.aurora.common.base.Consumers.lambda$filter$1(Consumers.java:74)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at java.util.function.Consumer.lambda$andThen$0(Consumer.java:65)
> at
> org.apache.aurora.common.util.StateMachine.transition(StateMachine.java:160)
> at
> org.apache.aurora.scheduler.SchedulerLifecycle.prepare(SchedulerLifecycle.java:354)
> at
> org.apache.aurora.scheduler.app.SchedulerMain.run(SchedulerMain.java:148)
> at
> org.apache.aurora.scheduler.app.SchedulerMain.flagConfiguredMain(SchedulerMain.java:219)
> at
> org.apache.aurora.scheduler.app.SchedulerMain.main(SchedulerMain.java:243)
> Caused by: java.io.IOException: blah blah blah
> at
> org.apache.aurora.scheduler.storage.log.LogStorage.prepare(LogStorage.java:404)
> ... 19 common frames omitted
> I0926 01:02:51.943 [qtp2025987098-37, RequestLog] 192.168.33.1 - -
> [26/Sep/2017:01:02:51 +0000] "GET //192.168.33.7:8081/threads HTTP/1.1" 200
> 2120
> I0926 01:02:52.925 [qtp2025987098-38, RequestLog] 192.168.33.1 - -
> [26/Sep/2017:01:02:52 +0000] "GET //192.168.33.7:8081/threads HTTP/1.1" 200
> 2134
> {noformat}
> You will still be able to access the "DEAD" Scheduler's HTTP interface.
> Checking the "/threads" endpoint shows that services that have failed to stop.
> I've attached a diff that can replicate the issue. Just bring up the Vagrant
> cluster and run the Scheduler with the patch applied.
> On a unrelated note: CallOrderEnforcingStorage.java does not allow
> transitions to STOPPED from any state other than READY. I am not sure if this
> is intentional, but I've added the transitions in the patch to isolate the
> above error.
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