Hi Artem,
Actually the yml provided in my previous reply was for DW6.
The correct DW8 yml is pasted below. I also don't see queueSize and
discardingThreshold as configuration options in DW0.8.4 the version we're
trying to upgrade to. But I see they're available in DW 1.0
server:
applicationConnectors:
- type: http
port: 8080
adminConnectors:
- type: http
port: 8081
requestLog:
appenders:
- type: file
timeZone: UTC
logFormat: null
currentLogFilename: /var/log/rtr/dfs/requests.log
archive: true
archivedLogFilenamePattern: /var/log/rtr/dfs/archived/requests-%d.log.gz
archivedFileCount: 5
logging:
appenders:
- type: file
threshold: INFO
currentLogFilename: /var/log/rtr/dfs/dfs.log
archivedLogFilenamePattern: /var/log/rtr/dfs/dfs-%d.log.gz
archivedFileCount: 5
timeZone: UTC
On Tuesday, April 18, 2017 at 4:57:02 PM UTC-4, [email protected]
wrote:
>
> Hi Dropwizard Users,
>
> We recently upgraded one of our query services to Dropwizard 0.8.4.
> Previously we were on Dropwizard6.
> With an increased load on the service, the # of waiting threads continued
> to increase beyond the set default limit of 1024. Eventually our
> application tipped over and resulted in a *java.lang.OutOfMemoryError:
> unable to create new native thread*. This was expected as the dw-* thread
> count was increasing when I checked via curl *http://localhost
> <http://localhost>:<admin port>/threads *and the number of dw-* threads
> and WAITING threads increased.
>
> I have shared the thread dumps below..
>
> 1. https://drive.google.com/open?id=0B2IzsO0HbvslYzhBT3RvUG5WOWc
>
> 2. https://drive.google.com/open?id=0B2IzsO0HbvslODVlNUFweGpsREk
>
> It seems like quite a few threads are waiting on the log.info statement
> and we suspect it could be the culprit here.
>
> at ch.qos.logback.classic.Logger.info(Logger.java:608)
>
>
> Has anyone else come across this issue with an upgrade? It looks http
> request specific (and not really database related) Any insights or tips
> would greatly help us as we continue to investigate the issue.
> Another observation - don't see any 500 http error codes in the stage
> requests.log. In the QA environment, we do see many 500s as expected for
> bad requests.
>
> Thanks
> Sonya
>
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