Thanks Giuliano,

I saw some failures.

A  INFO: End of request or previous flush has not yet completed, blocking.
 
A  Jul 06, 2018 5:14:44 PM com.google.apphosting.vmruntime.VmApiProxyDelegate 
runSyncCall
 

A  INFO: Error body: RPC Error: /StubbyService.Send to (unknown) : APP_ERROR(2)

018-07-06 12:14:44.000 CDT 

INFO: Error body: RPC Error: /StubbyService.Send to (unknown) : APP_ERROR(2)
Expand all | Collapse all
{
insertId: "1l61xvbf9j89do"  
labels: {…}  
logName: "projects/triage/logs/appengine.googleapis.com%2Fstderr"  
receiveTimestamp: "2018-07-06T17:14:44.240478404Z"  
resource: {…}  
textPayload: "INFO: Error body: RPC Error: /StubbyService.Send to (unknown) 
: APP_ERROR(2) "  
timestamp: "2018-07-06T17:14:44Z"  
}



2018-07-06 12:14:44.000 CDTjava.util.concurrent.ExecutionException: 
com.google.apphosting.api.ApiProxy$RPCFailedException: The remote RPC to the 
application server failed for the call logservice.Flush(). at 
java.util.concurrent.FutureTask.report(FutureTask.java:122) at 
java.util.concurrent.FutureTask.get(FutureTask.java:206) at 
com.google.apphosting.vmruntime.VmAppLogsWriter.waitForCurrentFlush(VmAppLogsWriter.java:226)
 at 
com.google.apphosting.vmruntime.VmAppLogsWriter.flushAndWait(VmAppLogsWriter.java:211)
 at 
com.google.apphosting.vmruntime.VmApiProxyEnvironment.flushLogs(VmApiProxyEnvironment.java:508)
 at 
com.google.apphosting.vmruntime.VmRuntimeUtils.flushLogsAndAddHeader(VmRuntimeUtils.java:109)
 at 
com.google.apphosting.vmruntime.jetty9.VmRuntimeWebAppContext.doScope(VmRuntimeWebAppContext.java:323)
 at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) 
at 
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
 at 
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109)
 at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119) 
at org.eclipse.jetty.server.Server.handle(Server.java:517) at 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:306) at 
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242) at 
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
 at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) at 
org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75) 
at 
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
 at 
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
 at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
 at 
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572) 
at java.lang.Thread.run(Thread.java:745) Caused by: 
com.google.apphosting.api.ApiProxy$RPCFailedException: The remote RPC to the 
application server failed for the call logservice.Flush(). at 
com.google.apphosting.vmruntime.VmApiProxyDelegate.runSyncCall(VmApiProxyDelegate.java:175)
 at 
com.google.apphosting.vmruntime.VmApiProxyDelegate.makeApiCall(VmApiProxyDelegate.java:155)
 at 
com.google.apphosting.vmruntime.VmApiProxyDelegate.access$000(VmApiProxyDelegate.java:75)
 at 
com.google.apphosting.vmruntime.VmApiProxyDelegate$MakeSyncCall.call(VmApiProxyDelegate.java:434)
 at 
com.google.apphosting.vmruntime.VmApiProxyDelegate$MakeSyncCall.call(VmApiProxyDelegate.java:410)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266) at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
... 1 more

2018-07-06 12:14:44.000 CDT2018-07-06 
17:14:44.933:INFO:oejs.ServerConnector:Thread-1: Stopped 
ServerConnector@43184193{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
Expand all | Collapse all
{
 insertId: "1r9ki5zf9mcqwx"  
 labels: {…}  
 logName: "projects/triage/logs/appengine.googleapis.com%2Fstderr"  
 receiveTimestamp: "2018-07-06T17:14:45.895354407Z"  
 resource: {…}  
 textPayload: "2018-07-06 17:14:44.933:INFO:oejs.ServerConnector:Thread-1: 
Stopped ServerConnector@43184193{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
"  
 timestamp: "2018-07-06T17:14:44Z"  
}



I think above exception or error maybe related. But no idea how to get rid 
of them.

Thanks

On Friday, July 6, 2018 at 11:34:34 AM UTC-5, Giuliano Ribeiro wrote:
>
> Hi Yi, 
>
> do you took a look on StackDrive logging? Any issues on the instances 
> startup?
>
>
>
> On Friday, July 6, 2018 at 5:31:50 PM UTC+1, yi he wrote:
>>
>> Hello,
>> I met a issue.
>> Everything works fine at the begin of this week. In the middle of the 
>> week, user reported can not access the website and I found the server 
>> respond 503 error. 
>> Do you have any guide how to locate the root cause?
>> I tried to redeploy it. It worked last night and broken again this 
>> morning.
>>
>> Thanks.
>>
>

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