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From "Sebu Koleth (JIRA)" <j...@apache.org>
Subject [jira] Created: (DIRAPI-13) Recursively drilling into the directory structure causes java.lang.OutOfMemoryError
Date Mon, 26 Apr 2010 20:30:32 GMT
Recursively drilling into the directory structure causes java.lang.OutOfMemoryError
-----------------------------------------------------------------------------------

                 Key: DIRAPI-13
                 URL: https://issues.apache.org/jira/browse/DIRAPI-13
             Project: Directory client API
          Issue Type: Bug
    Affects Versions: 0.1.0
         Environment: Windows XP SP3
            Reporter: Sebu Koleth


        private static void recursivelyDescend(LdapConnection connection, String dn) {
		System.out.println("Searching for children of dn : " + dn);
		try 
		{
			Cursor<SearchResponse> cursor = connection.search(dn, "(objectclass=*)", SearchScope.ONELEVEL,
"*");

			while (cursor.next())
			{
				SearchResponse response = cursor.get();
				if(response instanceof SearchResultEntry) {
					recursivelyDescend(connection, ((SearchResultEntry)response).getObjectName().getName());
				} else {
					System.out.println("Unusable response type " + response);
				}

			}
		} catch (LdapException le) {
			le.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

The above piece of code is exercised after obtaining an SSL-based LDAP connection. The target
server has hundreds of thousands of records at different levels. Logging at WARN level shows
a *lot* of messages :
WARN NioProcessor-1 org.apache.directory.shared.asn1.ber.Asn1Decoder - The PDU has been fully
decoded but there are still bytes in the buffer.
The code chokes at processing the 52nd entry that is two levels deep from the base DN. At
this level there are around 1000 sub-levels.


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