Lasindu Charith created STRATOS-1048:
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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.
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