Emmanuel Lecharny created DIRSERVER-1723:
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Summary: Potential LRUCache exhaustion with searches
Key: DIRSERVER-1723
URL: https://issues.apache.org/jira/browse/DIRSERVER-1723
Project: Directory ApacheDS
Issue Type: Bug
Affects Versions: 2.0.0-M6
Reporter: Emmanuel Lecharny
Priority: Blocker
Fix For: 2.0.0-M8
There are many case where the server will freeze if users don't correctly close
the cursors they get when doing a search :
- in JNDI, but forgotten to close a NamingEnumeration (*very* frequent use case
!)
- when many users create PagedSearches that last for a very long period of
time...
- when a client brutally disconnect (no alert will be sent to the server,
letting the cursor pending until the timeout is reached)
There is no way we can solve those issues by increasing the LRUCache size.
The only possible solution would be to allow some search to be proceeded
outside of any read transaction. That would also imply we deal with ID which
have been invalidated due to a modification. In fact, a Search should allow
phantom reads.
In any case, for internal searches, we should keep a transaction support for
searches.
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