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From Ryan Orr <ryanor...@gmail.com>
Subject Attempting to Push Aurora to ~11 requests/second
Date Wed, 18 Mar 2015 15:00:20 GMT
We're attempting to get Aurora to handle 11 job requests a second. We
realize we're going to be limited by the resource intensive nature of the
CLI and will be giving Herc a shot here soon; however we seem to get the
scheduler to crash in less than an hour while submitting about 2
jobs/second.

The job we're submitting simply echo's "Hello" ever minute for 5 minutes,
then exits. Here's what the logs look like at the time of the crash:

I0316 18:22:54.348743 20799 log.cpp:680] Attempting to append 1650 bytes to
the log
I0316 18:22:54.348808 20799 coordinator.cpp:340] Coordinator attempting to
write APPEND action at position 22668
I0316 18:22:54.348989 20799 replica.cpp:508] Replica received write request
for position 22668
I0316 18:22:54.352383 20799 leveldb.cpp:343] Persisting action (1671 bytes)
to leveldb took 3.370462ms
I0316 18:22:54.352414 20799 replica.cpp:676] Persisted action at 22668
I0316 18:22:54.352565 20799 replica.cpp:655] Replica received learned
notice for position 22668
I0316 18:22:54.356220 20799 leveldb.cpp:343] Persisting action (1673 bytes)
to leveldb took 3.634224ms
I0316 18:22:54.356253 20799 replica.cpp:676] Persisted action at 22668
I0316 18:22:54.356266 20799 replica.cpp:661] Replica learned APPEND action
at position 22668
I0316 18:22:54.561 THREAD127
org.apache.zookeeper.ClientCnxn$SendThread.startConnect: Opening socket
connection to server sandbox01/192.168.4.101:2181
I0316 18:22:54.563 THREAD127
org.apache.zookeeper.ClientCnxn$SendThread.primeConnection: Socket
connection established to sandbox01/192.168.4.101:2181, initiating session
I0316 18:22:54.564 THREAD127
org.apache.zookeeper.ClientCnxn$SendThread.readConnectResult: Session
establishment complete on server sandbox01/192.168.4.101:2181, sessionid =
0x14c03fdca89bc0f, negotiated timeout = 4000
I0316 18:22:55.374 THREAD143
org.apache.aurora.scheduler.async.OfferManager$OfferManagerImpl.addOffer:
Returning offers for 20150304-172015-1711581376-5050-15195-S5 for compaction
I0316 18:22:55.374 THREAD143
org.apache.aurora.scheduler.async.OfferManager$OfferManagerImpl.addOffer:
Returning offers for 20150304-172015-1711581376-5050-15195-S3 for compaction
I0316 18:22:55.394 THREAD137
com.twitter.common.util.StateMachine$Builder$1.execute:
1426265234214-root-prod-gl6e9DL4vM3J0XTxM0k9GMT4QeXRTgYz-0-8e0df05c-b6c7-40bd-924f-b858f39da316
state machine transition PENDING -> ASSIGNED
I0316 18:22:55.394 THREAD137
org.apache.aurora.scheduler.state.TaskStateMachine.addFollowup: Adding work
command SAVE_STATE for
1426265234214-root-prod-gl6e9DL4vM3J0XTxM0k9GMT4QeXRTgYz-0-8e0df05c-b6c7-40bd-924f-b858f39da316
I0316 18:22:55.394 THREAD137
org.apache.aurora.scheduler.state.TaskAssigner$TaskAssignerImpl.assign:
Offer on slave {URL} (id 20150304-172015-1711581376-5050-15195-S2) is being
assigned task for
1426265234214-root-prod-gl6e9DL4vM3J0XTxM0k9GMT4QeXRTgYz-0-8e0df05c-b6c7-40bd-924f-b858f39da316.
I0316 18:22:55.395851 20795 log.cpp:680] Attempting to append 1451 bytes to
the log
I0316 18:22:55.395921 20795 coordinator.cpp:340] Coordinator attempting to
write APPEND action at position 22669
I0316 18:22:55.396108 20795 replica.cpp:508] Replica received write request
for position 22669
I0316 18:22:57.621 THREAD1905
org.apache.aurora.scheduler.mesos.MesosScheduler.Impl.logStatusUpdate:
Received status update for task
1426265234214-root-prod-gl6e9DL4vM3J0XTxM0k9GMT4QeXRTgYz-0-8e0df05c-b6c7-40bd-924f-b858f39da316
in state TASK_STARTING: Initializing sandbox.
I0316 18:22:58.396 THREAD137
com.twitter.common.application.Lifecycle.shutdown: Shutting down application
I0316 18:22:58.396 THREAD137
com.twitter.common.application.ShutdownRegistry$ShutdownRegistryImpl.execute:
Executing 7 shutdown commands.
I0316 18:22:58.561 THREAD137
org.apache.aurora.scheduler.app.AppModule$RegisterShutdownStackPrinter$2.execute:
Shutdown initiated by: Thread: TaskScheduler-0 (id 137)
java.lang.Thread.getStackTrace(Thread.java:1589)

The stack trace doesn't show anything interesting, I can't figure out why
it just randomly issues a shutdown. Let me know if there's anything else
that would be helpful from the log, we're on an internal network so I can't
just copy/paste the logs over.

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