Thomas Mueller created OAK-1964:
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Summary: Performance degradation due to SessionDelegate.WarningLock
Key: OAK-1964
URL: https://issues.apache.org/jira/browse/OAK-1964
Project: Jackrabbit Oak
Issue Type: Bug
Components: jcr
Affects Versions: 1.0.2, 1.1
Reporter: Thomas Mueller
In OAK-1703, we have added a new class WarningLock that internally uses an
Exception to remember the stack trace. This seems to be used for every
SessionDelegate object. With Java 6 and older, this is very problematic because
it will cause "java.lang.Throwable.fillInStackTrace(Native Method)" to be
called for almost every call to any of the Oak JCR methods, and
"fillInStackTrace(Native Method)" is known to be be very slow. Java 7, I
believe, will at some point give up and not fill in the stack trace any more.
But with Java 6 and older, this is a big problem.
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