[jira] [Created] (STRATOS-1048) CEP OOM error when used in Single JVM mode for several days

["Lasindu Charith (JIRA)" <ji...@apache.org>]

Lasindu Charith created STRATOS-1048:
----------------------------------------

             Summary: CEP OOM error when used in Single JVM mode for several days
                 Key: STRATOS-1048
                 URL: https://issues.apache.org/jira/browse/STRATOS-1048
             Project: Stratos
          Issue Type: Bug
    Affects Versions: 4.0.0, 4.1.0, FUTURE
            Reporter: Lasindu Charith


When Stratos is running for few days in single JVM mode, it throws a 'GC overhead limit exceeded' error due to a large number of ScheduledFutureTask objects collected in heap over time.

TID: [0] [STRATOS] [2014-09-07 03:43:48,708] ERROR {org.apache.stratos.cep.extension.SecondDerivativeFinderWindowProcessor} - GC overhead limit exceeded {org.apache.stratos.cep.extension.SecondDerivativeFinderWindowProcessor} 
java.lang.OutOfMemoryError: GC overhead limit exceeded 
        at java.util.concurrent.Executors.callable(Executors.java:369) 
        at java.util.concurrent.FutureTask.<init>(FutureTask.java:152) 
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.<init>(ScheduledThreadPoolExecutor.java:207) 
        at java.util.concurrent.ScheduledThreadPoolExecutor.schedule(ScheduledThreadPoolExecutor.java:527) 
        at org.apache.stratos.cep.extension.SecondDerivativeFinderWindowProcessor.run(SecondDerivativeFinderWindowProcessor.java:156) 
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) 
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) 
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
        at java.lang.Thread.run(Thread.java:745) 

Attached patch for CEP window processors provides a fix for 4.0.0. siddhi-core 2.0.0-wso2v4 should have a similar fix for TimeWindowProcessor & TimeBatchWindowProcessor as well.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)