Hi Luigi,

I'll see about updating to 2.1.9, I guess I should also set it up in 
distributed mode going forward since it seems one node is not reliable 
enough.

I should also note another issue: on the client side of things, these 
errors keep popping up until I restart the client application.

[warn] c.o.o.c.r.OStorageRemote - Caught I/O errors from Not connected 
(local socket=?), trying to reconnect (error: java.io.IOException: Channel 
is closed)
[warn] c.o.o.c.r.OStorageRemote - Connection re-acquired transparently 
after 1ms and 1 retries to server '<hostname>:2424/<database>': no errors 
will be thrown at application level

(I replaced the actual hostname and database name above).

Seems like the client gets into a state where it keeps having to reacquire 
the connection. I'm using the graph factory and connection pool you guys 
provide by the way.

On Friday, January 15, 2016 at 3:53:18 AM UTC-5, Luigi Dell'Aquila wrote:
>
> Hi,
>
> two things here: 
> - first of all I suggest you to update to 2.1.9, we fixed a lot of issues 
> since 2.1.1, so probably the problem is already solved
> - if it happens again, please send us a thread dump (
> http://docs.oracle.com/javase/7/docs/technotes/tools/share/jstack.html) 
> it will help us to find the root cause of the problem
>
> Thanks
>
> Luigi
>
>
> 2016-01-14 21:24 GMT+01:00 nightrise <[email protected] <javascript:>>:
>
>> Hey guys,
>>
>> Today we introduced OrientDB at scale to our production environment. It 
>> lives on a beefy machine with high memory and is correctly configured to 
>> make use of it.
>>
>> Unfortunately, it fell over in the middle of the night and stopped 
>> responding. I had to kill the process and restart it -- after which things 
>> went back to normal. I should note that at the time, the load was pretty 
>> low, and CPU utilization was around 1% or so.
>>
>> I thought perhaps it was a fluke, but 12 hours later, sure enough it 
>> crashed again. This time, CPU usage seemed to spike to about 12%, and as 
>> did network output. Restarting it once more fixed the problem. Same thing 
>> again 15 minutes later -- lock up, had to restart it. 
>>
>> I've tried perusing the logs to see if anything unusual pops up in there 
>> -- but I'm not finding anything. I'm using version 2.1.1 of OrientDB in 
>> standalone mode (not distributed).
>>
>> Are there any suggestions on why this might be happening and how I might 
>> be able to diagnose the root issue? Are there tools that I could use?
>>
>> I should note that I've stress tested OrientDB in the past with the 
>> queries that are in use.
>>
>> Any help would be appreciated!
>>
>> -- 
>>
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>
>

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