OutOfMemoryError -- object not released.

• Key: JAMES-512
• Type: Bug
• Status: Closed
• Resolution: Fixed
• Priority: Critical
• Assignee: Noel J. Bergman
• Reporter: Quande Ren
• Component/s: MailStore & MailRepository
• Affects Version/s: 2.2.0
• Fix Version/s: 2.3.0

Environment

windows XP,
Java 1.5.0_06

Description

I use the file system to store the emails.

When I run the James for a long time, the james server used more and more heap memory, eventually it runs out of memory and refuse to receive email. only restart the james will work.

I used JProfile Memory Debugger(you can get the trial version from www.quest.com) and found a clue. the object allocated from following code at line 92 does not always get released, cause the memory been used up eventually. I will attach a picture file showing the call stack.

91, final OutputStream outputStream = getOutputStream( key );
92, final BufferedOutputStream stream = new BufferedOutputStream( outputStream );
93
94, final Object o = m_outputs.get( key );
95, if( null == o )
96, {
97, m_outputs.put( key; stream );
98, }
99, else if( o instanceof ArrayList )
100, {
101, ( (ArrayList)o ).add( stream );
102, }
103, else
104, {
105, final ArrayList list = new ArrayList();
106, list.add( o );
107, list.add( stream );
108, m_outputs.put( key; list );
109, }
110
111, return stream;