Hi,
I just tested the JPAStressTest (for IMAP-137 JPA fails to persist
MailboxMembership Entity on heavy load) Norman committed yesterday.
I made some tests towards derby (memory and embedded) , h2 (memory and
embedded) and mysql with following configs (and adding the needed jdbc
drivers in pom.xml):
// Derby Memory
properties.put("openjpa.ConnectionDriverName",
org.apache.derby.jdbc.EmbeddedDriver.class.getName());
properties.put("openjpa.ConnectionURL",
"jdbc:derby:memory:derbyimap;create=true");
// Derby Embedded
// properties.put("openjpa.ConnectionDriverName",
org.apache.derby.jdbc.EmbeddedDriver.class.getName());
// properties.put("openjpa.ConnectionURL",
"jdbc:derby:derbyimap;create=true;user=root;password=root");
// H2 Memory
// properties.put("openjpa.ConnectionDriverName",
org.h2.Driver.class.getName());
// properties.put("openjpa.ConnectionURL",
"jdbc:h2:mem:h2imap;DB_CLOSE_DELAY=-1");
// H2 Embedded
// properties.put("openjpa.ConnectionDriverName",
org.h2.Driver.class.getName());
// properties.put("openjpa.ConnectionURL",
"jdbc:h2:~/h2/h2imap;USER=root;PASSWORD=root");
//Mysql
// properties.put("openjpa.ConnectionDriverName",
com.mysql.jdbc.Driver.class.getName());
// properties.put("openjpa.ConnectionURL",
"jdbc:mysql://localhost:3306/msqlimap?user=root&password=root&createDatabaseIfNotExist=true&useUnicode=true&characterEncoding=utf-8");
I first changed the maximum number of messages from 1.000 to 100.000 and
saw on my linux dev PC (james server, stresstest and databases all
running on same dev PC):
Derby: after many mails sending:
java.io.IOException: Too many open files
...
Exception in thread "pool-1-thread-1044" java.lang.NoClassDefFoundError:
org/apache/james/imap/api/display/HumanReadableText
...
H2: after 400 mails:
java.io.IOException: Too many open files
...
Caused by: <openjpa-1.2.2-r422266:898935 nonfatal general error>
org.apache.openjpa.persistence.PersistenceException: Timeout trying to
lock table MEMBERSHIP [50200-79] {prepstmnt 406576
INSERT INTO Membership (mailboxId, uid, answered, deleted, draft,
flagged, internalDate, recent, seen, size, MESSAGE_ID)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
[params=(long) 1, (long) 49, (int) 0, (int) 0, (int) 0, (int) 0,
(Timestamp) 2010-05-01 08:37:10.293, (int) 0, (int) 0, (int) 25, (long)
4151]} [code=50200, state=HYT00]
...
MySql : after +/- 1000 (always around 1002 and 1007) mails :
Exception in thread "pool-1-thread-84" <openjpa-1.2.2-r422266:898935
nonfatal user error> org.apache.openjpa.persistence.NoResultException:
The query on candidate type "class
org.apache.james.imap.jpa.mail.model.JPAMailbox" with filter "SELECT
mailbox FROM Mailbox mailbox WHERE mailbox.mailboxId = :idParam" was
configured to have a unique result, but no instance matched the query.
....
org.apache.james.imap.mailbox.MailboxNotFoundException: Mailbox
'#mail.INBOX' not found.
...
3 different databases, 3 different behaviour/exceptions.
Running 3 components (james server, stresstest, database) on my
"not-so-strong-PC" may be an issue.
To make the tests successful, I added a Thread.sleep(5) (15 ms for
embedded derby and h2) between each mail sending.
I suppose we can say that in a real environment, the load will never be
that heavy, and that real server will perform better.
I also saw that the uid order is not respected:
Append message with uid=6258
Append message with uid=6259
Append message with uid=6256
Append message with uid=6257
This could come from a print mismatch, and not from uid being generated
in a bad order.
Tks in advance for your feedbacks, if any,
Eric
---------------------------------------------------------------------
To unsubscribe, e-mail: server-dev-unsubscr...@james.apache.org
For additional commands, e-mail: server-dev-h...@james.apache.org
