Jordan Ly created AURORA-1950:
---------------------------------
Summary: 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
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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