Memory Leak in Persistent search ?
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Key: DIRSERVER-644
URL:
http://issues.apache.org/jira/browse/DIRSERVER-644 Project: Directory ApacheDS
Type: Bug
Components: core
Versions: 1.0-RC3
Reporter: Emmanuel Lecharny
Assigned to: Alex Karasulu
Priority: Blocker
Fix For: 1.0-RC4
After having profiled memory, it seems we have a memory leak in SessionRegistry.
A little test (attached) does a search N times for N threads, and for each search, a OutstandingRequest is attached to the session. After a few thousands of search we fall in OOM. I've put some trace in those methods :
SessionRegistry.addOutstandingRequest
and
SessionRegistry.removeOutstandingRequest
Session Released
addOutstandingRequest 2
addOutstandingRequest 3
addOutstandingRequest 4
... ( 100 requests)
addOutstandingRequest 99
addOutstandingRequest 100
addOutstandingRequest 101
remove session
The SessionRegistry.removeOutstandingRequest is never called, except if an exception is raised (NamingException).
It may be on purpose ( persistent search), but we can't assume the server will be able to hold as many OutstandingRequest as we have search requests - or entries -.
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